Fix CI via Zizmor

Author: akx

.github/workflows/ci.yml

@@ -12,26 +12,34 @@ on:
       - master
       - '*-maint'
 
+permissions: {}
+
 jobs:
   lint:
+    name: Lint
     permissions:
       contents: read
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
-      - uses: astral-sh/setup-uv@v6
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        with:
+          persist-credentials: false
+      - uses: astral-sh/setup-uv@b75a909f75acd358c2196fb9a5f1299a9a8868a4 # v6.7.0
         with:
           cache-dependency-glob: ".github/workflows/*.yml"
           cache-suffix: pre-commit-uv
+          enable-cache: false
       - run: uv tool install pre-commit --with pre-commit-uv --force-reinstall
       - uses: actions/cache@v4
         with:
           path: ~/.cache/pre-commit
           key: pre-commit-uv-v1-${{ hashFiles('.pre-commit-config.yaml') }}
+          lookup-only: true
       - run: pre-commit run --all-files --show-diff-on-failure --color=always
         env:
           RUFF_OUTPUT_FORMAT: github
   test:
+    name: Test
     permissions:
       contents: read
     runs-on: ${{ matrix.os }}
@@ -54,11 +62,14 @@ jobs:
       BABEL_CLDR_QUIET: "1"
       PIP_DISABLE_PIP_VERSION_CHECK: "1"
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      with:
+        persist-credentials: false
     - uses: actions/cache@v4
       with:
         path: cldr
         key: cldr-${{ hashFiles('scripts/*cldr*') }}
+        lookup-only: true
     - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@v6
       with:
@@ -75,19 +86,22 @@ jobs:
       env:
         COVERAGE_XML_PATH: ${{ runner.temp }}
         BABEL_TOX_EXTRA_DEPS: pytest-github-actions-annotate-failures
-    - uses: codecov/codecov-action@v5
+    - uses: codecov/codecov-action@5a1091511ad55cbe89839c7260b706298ca349f7 # v5.5.1
       with:
         directory: ${{ runner.temp }}
         flags: ${{ matrix.os }}-${{ matrix.python-version }}
         token: ${{ secrets.CODECOV_TOKEN }}
         verbose: true
   build:
+    name: Build package
     permissions:
       contents: read
     runs-on: ubuntu-24.04
     needs: lint
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        with:
+          persist-credentials: false
       - uses: actions/setup-python@v6
         with:
           python-version: "3.13"
@@ -101,6 +115,7 @@ jobs:
           name: dist
           path: dist
   publish:
+    name: Publish to PyPI
     if: github.event_name == 'push' && startsWith(github.ref, 'refs/tags')
     needs:
       - build
@@ -109,14 +124,14 @@ jobs:
       name: release
       url: https://pypi.org/p/babel/
     permissions:
-      id-token: write
+      id-token: write # Required for Trusted Publishing action
     steps:
       - uses: actions/download-artifact@v5
         with:
           name: dist
           path: dist/
       - name: Publish package distributions to PyPI
-        uses: pypa/gh-action-pypi-publish@release/v1
+        uses: pypa/gh-action-pypi-publish@ed0c53931b1dc9bd32cbe73a98c7f6766f8a527e # v1.13.0
         with:
           verbose: true
           print-hash: true

.github/workflows/security.yml

@@ -0,0 +1,23 @@
+name: Security
+
+on:
+  push:
+    branches: ["master"]
+  pull_request:
+    branches: ["**"]
+
+permissions: {}
+
+jobs:
+  zizmor:
+    name: Run zizmor
+    runs-on: ubuntu-latest
+    permissions:
+      security-events: write # via Zizmor example
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        with:
+          persist-credentials: false
+      - name: Run zizmor
+        uses: zizmorcore/zizmor-action@e673c3917a1aef3c65c972347ed84ccd013ecda4 # v0.2.0