pin to ubuntu-22.04 as default runner OS

.github/workflows/ci.yml

@@ -41,7 +41,7 @@ jobs:
     name: Build and Test
     strategy:
       matrix:
-        os: [ubuntu-latest, macos-latest, windows-latest]
+        os: [ubuntu-22.04, macos-latest, windows-latest]
         scala: [2.12]
         java:
           - temurin@8
@@ -196,12 +196,12 @@ jobs:
         run: sbt githubWorkflowCheck
 
       - name: Check headers and formatting
-        if: matrix.java == 'temurin@8' && matrix.os == 'ubuntu-latest'
+        if: matrix.java == 'temurin@8' && matrix.os == 'ubuntu-22.04'
         shell: bash
         run: sbt 'project ${{ matrix.project }}' '++ ${{ matrix.scala }}' headerCheckAll scalafmtCheckAll 'project /' scalafmtSbtCheck
 
       - name: Check scalafix lints
-        if: matrix.java == 'temurin@8' && matrix.os == 'ubuntu-latest'
+        if: matrix.java == 'temurin@8' && matrix.os == 'ubuntu-22.04'
         shell: bash
         run: sbt 'project ${{ matrix.project }}' '++ ${{ matrix.scala }}' 'scalafixAll --check'
 
@@ -210,12 +210,12 @@ jobs:
         run: sbt 'project ${{ matrix.project }}' '++ ${{ matrix.scala }}' test
 
       - name: Check binary compatibility
-        if: matrix.java == 'temurin@8' && matrix.os == 'ubuntu-latest'
+        if: matrix.java == 'temurin@8' && matrix.os == 'ubuntu-22.04'
         shell: bash
         run: sbt 'project ${{ matrix.project }}' '++ ${{ matrix.scala }}' mimaReportBinaryIssues
 
       - name: Generate API documentation
-        if: matrix.java == 'temurin@8' && matrix.os == 'ubuntu-latest'
+        if: matrix.java == 'temurin@8' && matrix.os == 'ubuntu-22.04'
         shell: bash
         run: sbt 'project ${{ matrix.project }}' '++ ${{ matrix.scala }}' doc
 
@@ -246,7 +246,7 @@ jobs:
     if: github.event_name != 'pull_request' && (startsWith(github.ref, 'refs/tags/v') || github.ref == 'refs/heads/main')
     strategy:
       matrix:
-        os: [ubuntu-latest]
+        os: [ubuntu-22.04]
         java: [temurin@8]
     runs-on: ${{ matrix.os }}
     timeout-minutes: 45
@@ -393,7 +393,7 @@ jobs:
     if: github.event.repository.fork == false && github.event_name != 'pull_request'
     strategy:
       matrix:
-        os: [ubuntu-latest]
+        os: [ubuntu-22.04]
         java: [temurin@8]
     runs-on: ${{ matrix.os }}
     steps:
@@ -510,7 +510,7 @@ jobs:
     name: Validate Steward Config
     strategy:
       matrix:
-        os: [ubuntu-latest]
+        os: [ubuntu-22.04]
         java: [temurin@11]
     runs-on: ${{ matrix.os }}
     steps:
@@ -535,7 +535,7 @@ jobs:
     name: Generate Site
     strategy:
       matrix:
-        os: [ubuntu-latest]
+        os: [ubuntu-22.04]
         java: [temurin@11]
     runs-on: ${{ matrix.os }}
     steps:

.mergify.yml

@@ -12,17 +12,17 @@ pull_request_rules:
   - or:
     - body~=labels:.*early-semver-patch
     - body~=labels:.*early-semver-minor
-  - status-success=Build and Test (ubuntu-latest, 2.12, temurin@8, sbt-typelevelJVM)
-  - status-success=Build and Test (ubuntu-latest, 2.12, temurin@11, sbt-typelevelJVM)
-  - status-success=Build and Test (ubuntu-latest, 2.12, temurin@17, sbt-typelevelJVM)
-  - status-success=Build and Test (ubuntu-latest, 2.12, graal_22.3.2@11, sbt-typelevelJVM)
-  - status-success=Build and Test (ubuntu-latest, 2.12, graalvm@21, sbt-typelevelJVM)
-  - status-success=Build and Test (ubuntu-latest, 2.12, corretto@17, sbt-typelevelJVM)
-  - status-success=Build and Test (ubuntu-latest, 2.12, semeru@17, sbt-typelevelJVM)
+  - status-success=Build and Test (ubuntu-22.04, 2.12, temurin@8, sbt-typelevelJVM)
+  - status-success=Build and Test (ubuntu-22.04, 2.12, temurin@11, sbt-typelevelJVM)
+  - status-success=Build and Test (ubuntu-22.04, 2.12, temurin@17, sbt-typelevelJVM)
+  - status-success=Build and Test (ubuntu-22.04, 2.12, graal_22.3.2@11, sbt-typelevelJVM)
+  - status-success=Build and Test (ubuntu-22.04, 2.12, graalvm@21, sbt-typelevelJVM)
+  - status-success=Build and Test (ubuntu-22.04, 2.12, corretto@17, sbt-typelevelJVM)
+  - status-success=Build and Test (ubuntu-22.04, 2.12, semeru@17, sbt-typelevelJVM)
   - status-success=Build and Test (macos-latest, 2.12, temurin@17, sbt-typelevelJVM)
   - status-success=Build and Test (windows-latest, 2.12, temurin@8, sbt-typelevelJVM)
-  - status-success=Validate Steward Config (ubuntu-latest, temurin@11)
-  - status-success=Generate Site (ubuntu-latest, temurin@11)
+  - status-success=Validate Steward Config (ubuntu-22.04, temurin@11)
+  - status-success=Generate Site (ubuntu-22.04, temurin@11)
   - '#approved-reviews-by>=1'
   actions:
     merge: {}

github-actions/src/main/scala/org/typelevel/sbt/gha/GenerativeKeys.scala

@@ -87,7 +87,7 @@ trait GenerativeKeys {
   lazy val githubWorkflowScalaVersions = settingKey[Seq[String]](
     "A list of Scala versions on which to build the project (default: crossScalaVersions.value)")
   lazy val githubWorkflowOSes =
-    settingKey[Seq[String]]("A list of OS names (default: [ubuntu-latest])")
+    settingKey[Seq[String]]("A list of OS names (default: [ubuntu-22.04])")
 
   lazy val githubWorkflowDependencyPatterns = settingKey[Seq[String]](
     "A list of file globes within the project which affect dependency information (default: [**/*.sbt, project/build.properties])")

github-actions/src/main/scala/org/typelevel/sbt/gha/GenerativePlugin.scala

@@ -651,7 +651,7 @@ ${indent(jobs.map(compileJob(_, sbt)).mkString("\n\n"), 1)}
       else
         scalas
     },
-    githubWorkflowOSes := Seq("ubuntu-latest"),
+    githubWorkflowOSes := Seq("ubuntu-22.04"),
     githubWorkflowDependencyPatterns := Seq("**/*.sbt", "project/build.properties"),
     githubWorkflowTargetBranches := Seq("**"),
     githubWorkflowTargetTags := Seq(),

github-actions/src/main/scala/org/typelevel/sbt/gha/WorkflowJob.scala

@@ -74,7 +74,7 @@ object WorkflowJob {
       cond: Option[String] = None,
       permissions: Option[Permissions] = None,
       env: Map[String, String] = Map(),
-      oses: List[String] = List("ubuntu-latest"),
+      oses: List[String] = List("ubuntu-22.04"),
       scalas: List[String] = List("2.13"),
       javas: List[JavaSpec] = List(JavaSpec.temurin("11")),
       needs: List[String] = List(),