ci: GitHub Actions dependencies (#26962)

.github/actions/setup-bun/action.yml

@@ -23,7 +23,7 @@ runs:
         fi
 
     - name: Setup Bun
-      uses: oven-sh/setup-bun@v2
+      uses: oven-sh/setup-bun@0c5077e51419868618aeaa5fe8019c62421857d6 # v2.2.0
       with:
         bun-version-file: ${{ !steps.bun-url.outputs.url && 'package.json' || '' }}
         bun-download-url: ${{ steps.bun-url.outputs.url }}
@@ -34,7 +34,7 @@ runs:
       run: echo "dir=$(bun pm cache)" >> "$GITHUB_OUTPUT"
 
     - name: Cache Bun dependencies
-      uses: actions/cache@v4
+      uses: actions/cache@0057852bfaa89a56745cba8c7296529d2fc39830 # v4.3.0
       with:
         path: ${{ steps.cache.outputs.dir }}
         key: ${{ runner.os }}-bun-${{ hashFiles('**/bun.lock') }}