Bump bazel-contrib/setup-bazel from 0.14.0 to 0.15.0 (#514)

Author: dependabot[bot]

.github/workflows/ci.yaml

@@ -105,7 +105,7 @@ jobs:
           submodules: recursive
           ssh-key: ${{ secrets.SSH_KEY }}
 
-      - uses: bazel-contrib/setup-bazel@0.14.0
+      - uses: bazel-contrib/setup-bazel@0.15.0
         with:
           # Avoid downloading Bazel every time.
           bazelisk-cache: true
@@ -130,7 +130,7 @@ jobs:
           submodules: recursive
           ssh-key: ${{ secrets.SSH_KEY }}
 
-      - uses: bazel-contrib/setup-bazel@0.14.0
+      - uses: bazel-contrib/setup-bazel@0.15.0
         with:
           # Avoid downloading Bazel every time.
           bazelisk-cache: true