chore: pin actions to commit sha

Author: kettanaito

.github/workflows/ci.yml

@@ -15,13 +15,13 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0
         with:
           fetch-depth: 0
           token: ${{ secrets.GH_ADMIN_TOKEN }}
 
       - name: Set up pnpm
-        uses: pnpm/action-setup@v4
+        uses: pnpm/action-setup@0e279bb959325dab635dd2c09392533439d90093
         with:
           version: 11.5.2