Update scala-library to 2.12.20 (#75)

* Update scala-library to 2.12.20

* Regenerate GitHub Actions workflow

Executed command: sbt githubWorkflowGenerate

.github/workflows/ci.yml

@@ -23,7 +23,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        scala: [2.12.19, 2.13.14, 3.3.3]
+        scala: [2.12.20, 2.13.14, 3.3.3]
         java: [zulu@8]
     runs-on: ${{ matrix.os }}
     steps:
@@ -79,12 +79,12 @@ jobs:
           java-version: 8
           cache: sbt
 
-      - name: Download target directories (2.12.19)
+      - name: Download target directories (2.12.20)
         uses: actions/download-artifact@v4
         with:
-          name: target-${{ matrix.os }}-2.12.19-${{ matrix.java }}
+          name: target-${{ matrix.os }}-2.12.20-${{ matrix.java }}
 
-      - name: Inflate target directories (2.12.19)
+      - name: Inflate target directories (2.12.20)
         run: |
           tar xf targets.tar
           rm targets.tar

build.sbt

@@ -6,7 +6,7 @@ name := "micrometer-pekko"
 
 ThisBuild / scalaVersion := "2.13.14"
 
-ThisBuild / crossScalaVersions := Seq("2.12.19", "2.13.14", "3.3.3")
+ThisBuild / crossScalaVersions := Seq("2.12.20", "2.13.14", "3.3.3")
 
 scalacOptions += "-target:jvm-1.8"