ci: pin GitHub Actions to SHA digests (fix zizmor unpinned-uses)

.github/workflows/publish-docs.yml

@@ -21,13 +21,13 @@ jobs:
     env:
       CI: "TRUE"
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
         # We need to additionally fetch the gh-pages branch for mike deploy
         with:
           fetch-depth: 0
 
       - name: Install a specific version of uv
-        uses: astral-sh/setup-uv@v5
+        uses: astral-sh/setup-uv@d4b2f3b6ecc6e67c4457f6d3e41ec42d3d0fcb86 # v5
         with:
           enable-cache: true
           version: "0.5.x"

.github/workflows/release.yml

@@ -12,18 +12,18 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
 
       - name: Install a specific version of uv
-        uses: astral-sh/setup-uv@v6
+        uses: astral-sh/setup-uv@d0cc045d04ccac9d8b7881df0226f9e82c39688e # v6
         with:
           version: "latest"
 
       - name: Build dist
         run: |
           uv run python -m build
 
-      - uses: actions/upload-artifact@v6
+      - uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f # v6
         with:
           path: ./dist/
 
@@ -39,11 +39,11 @@ jobs:
     permissions:
       id-token: write # IMPORTANT: this permission is mandatory for trusted publishing
     steps:
-      - uses: actions/download-artifact@v7
+      - uses: actions/download-artifact@37930b1c2abaa49bbe596cd826c3c89aef350131 # v7
         with:
           name: artifact
           path: dist
           merge-multiple: true
 
       - name: Publish package distributions to PyPI
-        uses: pypa/gh-action-pypi-publish@release/v1
+        uses: pypa/gh-action-pypi-publish@ed0c53931b1dc9bd32cbe73a98c7f6766f8a527e # release/v1

.github/workflows/test-python.yml

@@ -18,17 +18,17 @@ jobs:
     name: Run pre-commit on Python code
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
 
-      - uses: actions/setup-python@v5
+      - uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5
         with:
           python-version: "3.11"
 
       # Use ruff-action so we get annotations in the Github UI
-      - uses: astral-sh/ruff-action@v3
+      - uses: astral-sh/ruff-action@4919ec5cf1f49eff0871dbcea0da843445b837e6 # v3
 
       - name: Cache pre-commit virtualenvs
-        uses: actions/cache@v4
+        uses: actions/cache@0057852bfaa89a56745cba8c7296529d2fc39830 # v4
         with:
           path: ~/.cache/pre-commit
           key: pre-commit-3|${{ hashFiles('.pre-commit-config.yaml') }}
@@ -46,10 +46,10 @@ jobs:
       matrix:
         python-version: ["3.9", "3.10", "3.11", "3.12"]
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
 
       - name: Install uv
-        uses: astral-sh/setup-uv@v5
+        uses: astral-sh/setup-uv@d4b2f3b6ecc6e67c4457f6d3e41ec42d3d0fcb86 # v5
         with:
           enable-cache: true
           version: "0.5.x"