ci: pin the runner image

Author: azmeuk

.github/workflows/release.yml

@@ -14,7 +14,7 @@ permissions:
 jobs:
   build:
     name: build dist files
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
 
     steps:
       - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
@@ -44,7 +44,7 @@ jobs:
   release:
     name: create Github release
     needs: build
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
     permissions:
       contents: write
       id-token: write
@@ -64,7 +64,7 @@ jobs:
   publish:
     name: release to pypi
     needs: build
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
 
     environment:
       name: pypi-release

.github/workflows/tests.yaml

@@ -19,7 +19,7 @@ permissions:
 jobs:
   tests:
     name: py${{ matrix.python }} unit tests
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
     strategy:
       fail-fast: false
       matrix:
@@ -42,7 +42,7 @@ jobs:
 
   minversions:
     name: minimum dependency versions
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
     env:
       UV_RESOLUTION: lowest-direct
       UV_LOCKED: 0
@@ -59,13 +59,13 @@ jobs:
         run: uv run pytest --showlocals
 
   style:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
     steps:
     - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
     - uses: pre-commit/action@2c7b3805fd2a0fd8c1884dcaebf91fc102a13ecd # v3.0.1
 
   doc:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
     steps:
       - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
       - name: Install uv
@@ -79,7 +79,7 @@ jobs:
       - run: uv run sphinx-build -W --keep-going -b man doc build/sphinx/man
 
   bundle:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
     steps:
       - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
       - name: Install uv
@@ -95,7 +95,7 @@ jobs:
         run: ./dist/scim2 --help
 
   nix:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
     steps:
     - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
     - uses: cachix/install-nix-action@13d8dd58da0234aa297dedd986986ccb8e7f3e24 # v31.11.1