ci: pin Python release actions

Author: Fermionic-Lyu

.github/workflows/publish.yml

@@ -19,9 +19,9 @@ jobs:
     outputs:
       stable: ${{ steps.version.outputs.stable }}
     steps:
-      - uses: actions/checkout@v7
+      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7
 
-      - uses: actions/setup-python@v6
+      - uses: actions/setup-python@ece7cb06caefa5fff74198d8649806c4678c61a1 # v6
         with:
           python-version: "3.11"
 
@@ -64,7 +64,7 @@ jobs:
           /tmp/insforge-wheel-test/bin/python -c 'import insforge; from importlib.metadata import version; print(version("insforge"))'
 
       - name: Upload distributions
-        uses: actions/upload-artifact@v7
+        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7
         with:
           name: python-package-distributions
           path: dist/
@@ -79,7 +79,7 @@ jobs:
       id-token: write
     steps:
       - name: Download distributions
-        uses: actions/download-artifact@v8
+        uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8
         with:
           name: python-package-distributions
           path: dist/