GHA: pin actions to commit SHAs as suggested by zizmor

See https://docs.zizmor.sh/audits/#unpinned-uses

Author: generalmimon

.github/workflows/check-style.yml

@@ -12,13 +12,13 @@ jobs:
     env:
       FORCE_COLOR: '1'
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
         with:
           persist-credentials: false
 
       - name: Install Ruff
         id: install-ruff
-        uses: astral-sh/ruff-action@v3
+        uses: astral-sh/ruff-action@4919ec5cf1f49eff0871dbcea0da843445b837e6 # v3.6.1
         with:
           version: '0.15.x'
           args: '--version'
@@ -43,11 +43,11 @@ jobs:
     name: Pylint
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
         with:
           persist-credentials: false
       - name: Set up Python
-        uses: actions/setup-python@v6
+        uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405 # v6.2.0
         with:
           python-version: '3.14'
       - name: Install dependencies

.github/workflows/release.yml

@@ -16,19 +16,19 @@ jobs:
     permissions:
       contents: read
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
         with:
           persist-credentials: false
       - name: Set up Python
-        uses: actions/setup-python@v6
+        uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405 # v6.2.0
         with:
           python-version: '3.x'
       - name: Install pypa/build
         run: python3 -m pip install build --user
       - name: Build a binary wheel and a source tarball
         run: python3 -m build
       - name: Store the package distributions
-        uses: actions/upload-artifact@v7
+        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
         with:
           name: python-package-distributions
           path: dist/
@@ -45,12 +45,12 @@ jobs:
       id-token: write  # IMPORTANT: mandatory for trusted publishing
     steps:
       - name: Download all the dists
-        uses: actions/download-artifact@v8
+        uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8.0.1
         with:
           name: python-package-distributions
           path: dist/
       - name: Publish distribution to TestPyPI
-        uses: pypa/gh-action-pypi-publish@release/v1
+        uses: pypa/gh-action-pypi-publish@cef221092ed1bacb1cc03d23a2d87d1d172e277b # v1.14.0
         with:
           repository-url: https://test.pypi.org/legacy/
 
@@ -68,9 +68,9 @@ jobs:
       id-token: write  # IMPORTANT: mandatory for trusted publishing
     steps:
       - name: Download all the dists
-        uses: actions/download-artifact@v8
+        uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8.0.1
         with:
           name: python-package-distributions
           path: dist/
       - name: Publish distribution to PyPI
-        uses: pypa/gh-action-pypi-publish@release/v1
+        uses: pypa/gh-action-pypi-publish@cef221092ed1bacb1cc03d23a2d87d1d172e277b # v1.14.0