build: update dependency @bazel/runfiles to v6 (#31148)

See associated pull request for more information.

(cherry picked from commit dbdb32d)

Author: angular-robot

package.json

@@ -84,7 +84,7 @@
     "@bazel/bazelisk": "1.12.1",
     "@bazel/buildifier": "8.2.0",
     "@bazel/ibazel": "^0.25.0",
-    "@bazel/runfiles": "5.8.1",
+    "@bazel/runfiles": "6.3.1",
     "@firebase/app-types": "^0.7.0",
     "@material/material-color-utilities": "^0.3.0",
     "@octokit/rest": "18.3.5",