github actions: switch to ubuntu-24.04

Github announced to switch the "ubuntu-latest" image to version 24.04:
actions/runner-images#10636

this starts shortly, but takes three weeks. to control when we use the
new image, we explicitly select the new image now.

.github/workflows/build.yml

@@ -18,7 +18,7 @@ on:
 jobs:
   get_default_envs:
     name: Gather Environments
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
     steps:
       - uses: actions/checkout@v4
 
@@ -49,7 +49,7 @@ jobs:
 
   build:
     name: Build Environments
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
     needs: get_default_envs
     strategy:
       matrix:
@@ -134,7 +134,7 @@ jobs:
 
   release:
     name: Create Release
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
     needs: [get_default_envs, build]
     if: startsWith(github.ref, 'refs/tags/2')
     steps:

.github/workflows/cpplint.yml

@@ -4,7 +4,7 @@ on: [push, pull_request]
 
 jobs:
   build:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
 
     # prevent push event from triggering if it's part of a local PR, see
     # https://github.com/orgs/community/discussions/57827#discussioncomment-6579237

.github/workflows/repo-maintenance.yml

@@ -16,7 +16,7 @@ concurrency:
 jobs:
     stale:
         name: 'Stale'
-        runs-on: ubuntu-latest
+        runs-on: ubuntu-24.04
         steps:
           - uses: actions/stale@v9
             with:
@@ -32,7 +32,7 @@ jobs:
 
     lock-threads:
         name: 'Lock Old Threads'
-        runs-on: ubuntu-latest
+        runs-on: ubuntu-24.04
         steps:
           - uses: dessant/lock-threads@v5
             with:

.github/workflows/yarnlint.yml

@@ -4,7 +4,7 @@ on: [push, pull_request]
 
 jobs:
   build:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
 
     # prevent push event from triggering if it's part of a local PR, see
     # https://github.com/orgs/community/discussions/57827#discussioncomment-6579237

.github/workflows/yarnprettier.yml

@@ -4,7 +4,7 @@ on: [push, pull_request]
 
 jobs:
   build:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
 
     # prevent push event from triggering if it's part of a local PR, see
     # https://github.com/orgs/community/discussions/57827#discussioncomment-6579237