fix(ci): run workflows on the Ubuntu runner image

.gitea/workflows/ci.yml

@@ -7,16 +7,19 @@ on:
 
 jobs:
   validate:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
     steps:
       - uses: actions/checkout@v4
       - uses: actions/setup-go@v5
         with:
           go-version-file: go.mod
           cache: true
-      - uses: actions/setup-python@v5
+      - name: Set up Python
+        uses: actions/setup-python@v5
         with:
           python-version: "3.12"
+          cache: pip
+          cache-dependency-path: tools/requirements-validation.txt
       - name: Install specification validators
         run: python -m pip install --requirement tools/requirements-validation.txt
       - name: Check formatting

.gitea/workflows/release.yml

@@ -7,7 +7,7 @@ on:
 
 jobs:
   validate:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
     steps:
       - uses: actions/checkout@v4
         with:
@@ -16,9 +16,12 @@ jobs:
         with:
           go-version-file: go.mod
           cache: true
-      - uses: actions/setup-python@v5
+      - name: Set up Python
+        uses: actions/setup-python@v5
         with:
           python-version: "3.12"
+          cache: pip
+          cache-dependency-path: tools/requirements-validation.txt
       - run: python -m pip install --requirement tools/requirements-validation.txt
       - name: Validate release tag
         run: echo "$GITHUB_REF_NAME" | grep -Eq '^v[0-9]+\.[0-9]+\.[0-9]+(-[0-9A-Za-z.-]+)?$'
@@ -36,7 +39,7 @@ jobs:
 
   publish:
     needs: validate
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
     permissions:
       contents: write
       packages: write