Apply suggestions from code review

Co-authored-by: Hugo van Kemenade <1324225+hugovk@users.noreply.github.com>

Author: vstinner

.github/workflows/add-issue-header.yml

@@ -17,7 +17,7 @@ permissions:
 
 jobs:
   add-header:
-    runs-on: ubuntu-26.04
+    runs-on: ubuntu-slim
     permissions:
       issues: write
     timeout-minutes: 5

.github/workflows/build.yml

@@ -568,7 +568,7 @@ jobs:
 
   cross-build-linux:
     name: Cross build Linux
-    runs-on: ubuntu-26.04
+    runs-on: ubuntu-latest
     timeout-minutes: 60
     needs: build-context
     if: needs.build-context.outputs.run-ubuntu == 'true'
@@ -650,7 +650,7 @@ jobs:
 
   all-required-green:  # This job does nothing and is only used for the branch protection
     name: All required checks pass
-    runs-on: ubuntu-26.04
+    runs-on: ubuntu-latest
     timeout-minutes: 5
     needs:
     - build-context  # Transitive dependency, needed to access `run-tests` value

.github/workflows/lint.yml

@@ -15,7 +15,7 @@ concurrency:
 
 jobs:
   lint:
-    runs-on: ubuntu-26.04
+    runs-on: ubuntu-latest
     timeout-minutes: 10
 
     steps:

.github/workflows/mypy.yml

@@ -49,7 +49,7 @@ concurrency:
 jobs:
   mypy:
     name: Run mypy on ${{ matrix.target }}
-    runs-on: ubuntu-26.04
+    runs-on: ubuntu-latest
     timeout-minutes: 10
     strategy:
       fail-fast: false

.github/workflows/require-pr-label.yml

@@ -11,7 +11,7 @@ jobs:
   label-dnm:
     name: DO-NOT-MERGE
     if: github.repository_owner == 'python'
-    runs-on: ubuntu-26.04
+    runs-on: ubuntu-slim
     permissions:
       pull-requests: read
     timeout-minutes: 10
@@ -28,7 +28,7 @@ jobs:
   label-reviews:
     name: Unresolved review
     if: github.repository_owner == 'python'
-    runs-on: ubuntu-26.04
+    runs-on: ubuntu-slim
     permissions:
       pull-requests: read
     timeout-minutes: 10

.github/workflows/reusable-check-c-api-docs.yml

@@ -12,7 +12,7 @@ env:
 jobs:
   check-c-api-docs:
     name: 'Check if all C APIs are documented'
-    runs-on: ubuntu-26.04
+    runs-on: ubuntu-latest
     timeout-minutes: 5
     steps:
       - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0

.github/workflows/reusable-check-html-ids.yml

@@ -12,7 +12,7 @@ env:
 jobs:
   check-html-ids:
     name: 'Check for removed HTML IDs'
-    runs-on: ubuntu-26.04
+    runs-on: ubuntu-latest
     timeout-minutes: 30
     steps:
       - name: 'Check out PR head'

.github/workflows/reusable-cifuzz.yml

@@ -19,7 +19,7 @@ permissions:
 jobs:
   cifuzz:
     name: ${{ inputs.oss-fuzz-project-name }} (${{ inputs.sanitizer }})
-    runs-on: ubuntu-26.04
+    runs-on: ubuntu-latest
     timeout-minutes: 60
     steps:
       - name: Build fuzzers (${{ inputs.sanitizer }})

.github/workflows/reusable-context.yml

@@ -60,7 +60,7 @@ permissions:
 jobs:
   compute-changes:
     name: Create context from changed files
-    runs-on: ubuntu-26.04
+    runs-on: ubuntu-latest
     timeout-minutes: 10
     outputs:
       run-android: ${{ steps.changes.outputs.run-android }}

.github/workflows/reusable-docs.yml

@@ -17,7 +17,7 @@ env:
 jobs:
   build-doc:
     name: 'Docs'
-    runs-on: ubuntu-26.04
+    runs-on: ubuntu-latest
     timeout-minutes: 60
     env:
       branch_base: 'origin/${{ github.event.pull_request.base.ref }}'
@@ -95,7 +95,7 @@ jobs:
   # Run "doctest" on HEAD as new syntax doesn't exist in the latest stable release
   doctest:
     name: 'Doctest'
-    runs-on: ubuntu-26.04
+    runs-on: ubuntu-latest
     timeout-minutes: 60
     steps:
     - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
@@ -121,7 +121,7 @@ jobs:
 
   check-epub:
     name: 'Check EPUB'
-    runs-on: ubuntu-26.04
+    runs-on: ubuntu-latest
     timeout-minutes: 30
     steps:
     - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0