Use ubuntu-24.04 instead of ubuntu-latest

This should silence the warnings in GitHub and ensure we don't run into
unexpected upgrades again in the future.

.github/workflows/container.yml

@@ -14,7 +14,7 @@ env:
 
 jobs:
   build:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
     permissions:
       contents: read
       packages: write

.github/workflows/push.yml

@@ -26,7 +26,7 @@ jobs:
 
   nightly-container:
     name: Nightly container
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
     permissions:
       contents: read
       packages: write
@@ -53,7 +53,7 @@ jobs:
 
   docs:
     name: Documentation
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
     container:
       image: ghcr.io/inko-lang/inko:latest
     env:
@@ -77,7 +77,7 @@ jobs:
 
   std-docs:
     name: Standard library documentation
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
     container:
       image: ghcr.io/inko-lang/ci:fedora
     env:

.github/workflows/release.yml

@@ -19,7 +19,7 @@ jobs:
 
   source:
     name: Source archive
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
     container:
       image: ghcr.io/inko-lang/ci:fedora
     needs:
@@ -45,7 +45,7 @@ jobs:
 
   docs:
     name: Documentation
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
     container:
       image: ghcr.io/inko-lang/inko:latest
     needs:
@@ -76,7 +76,7 @@ jobs:
 
   std-docs:
     name: Standard library documentation
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
     container:
       image: ghcr.io/inko-lang/ci:fedora
     env:
@@ -105,7 +105,7 @@ jobs:
 
   container:
     name: Container
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
     needs:
       - docs
       - runtimes

.github/workflows/runtimes.yml

@@ -10,7 +10,7 @@ env:
 
 jobs:
   amd64-linux:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
     container:
       image: ghcr.io/inko-lang/ci:debian-amd64
     steps:
@@ -26,7 +26,7 @@ jobs:
           compression-level: 0
 
   arm64-linux:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
     container:
       image: ghcr.io/inko-lang/ci:debian-arm64
     steps:
@@ -74,7 +74,7 @@ jobs:
           compression-level: 0
 
   amd64-freebsd:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
     steps:
       - uses: actions/checkout@v4
       - name: Build runtimes
@@ -96,7 +96,7 @@ jobs:
 
   upload:
     name: Upload runtimes
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
     container:
       image: ghcr.io/inko-lang/ci:fedora
     env:

.github/workflows/tests.yml

@@ -10,7 +10,7 @@ env:
 
 jobs:
   vale:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
     steps:
       - uses: actions/checkout@v4
       - uses: errata-ai/vale-action@reviewdog
@@ -21,13 +21,13 @@ jobs:
           vale_flags: '--no-wrap --sort'
 
   cargo-deny:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
     steps:
       - uses: actions/checkout@v4
       - uses: EmbarkStudios/cargo-deny-action@v1
 
   cargo-clippy:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
     container:
       image: ghcr.io/inko-lang/ci:fedora
     steps:
@@ -40,7 +40,7 @@ jobs:
         run: 'cargo clippy -- -D warnings'
 
   cargo-fmt:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
     container:
       image: ghcr.io/inko-lang/ci:fedora
     steps:
@@ -49,7 +49,7 @@ jobs:
         run: 'cargo fmt --all --check'
 
   inko-fmt:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
     container:
       image: ghcr.io/inko-lang/ci:fedora
     steps:
@@ -65,7 +65,7 @@ jobs:
 
   amd64-linux-gnu:
     timeout-minutes: 15
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
     container:
       image: ghcr.io/inko-lang/ci:fedora
     steps:
@@ -86,7 +86,7 @@ jobs:
 
   amd64-linux-musl:
     timeout-minutes: 15
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
     container:
       image: ghcr.io/inko-lang/ci:alpine
     steps:
@@ -142,7 +142,7 @@ jobs:
 
   amd64-freebsd-native:
     timeout-minutes: 15
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
     env:
       RUSTUP_HOME: ${{ github.workspace }}/.rustup-home
     steps: