Replace deprecated setup-bazelisk with setup-bazel (#510)

Author: armallen

.github/workflows/ci.yaml

@@ -105,14 +105,16 @@ jobs:
           submodules: recursive
           ssh-key: ${{ secrets.SSH_KEY }}
 
-      - name: Install bazelisk
-        uses: bazelbuild/setup-bazelisk@v2
+      - uses: bazel-contrib/[email protected]
+        with:
+          # Avoid downloading Bazel every time.
+          bazelisk-cache: true
 
       - name: Mount bazel cache
         uses: actions/cache@v4
         with:
           path: "~/.cache/bazel"
-          key: bazel
+          key: format
 
       - name: Format
         run: bazel build --config=clang-format-check //...
@@ -128,8 +130,10 @@ jobs:
           submodules: recursive
           ssh-key: ${{ secrets.SSH_KEY }}
 
-      - name: Install bazelisk
-        uses: bazelbuild/setup-bazelisk@v2
+      - uses: bazel-contrib/[email protected]
+        with:
+          # Avoid downloading Bazel every time.
+          bazelisk-cache: true
 
       - name: Mount bazel cache
         uses: actions/cache@v4