Setup repository cache that will persist in github cache

.github/actions/internal/bazel-setup/action.yml

diff --git a/.github/actions/internal/bazel-setup/action.yml b/.github/actions/internal/bazel-setup/action.yml
index 20e7241..fdafded 100644
--- a/.github/actions/internal/bazel-setup/action.yml
+++ b/.github/actions/internal/bazel-setup/action.yml
@@ -17,6 +17,9 @@
   bazel-startup-flags:
     description: Bazel startup flags that should be sent to all Bazel invocations
     value: ${{ steps.output.outputs.bazel-startup-flags }}
+  repository-cache:
+    description: The location of our cached Bazel repository cache.
+    value: ${{ steps.output.outputs.repository-cache }}
 
 runs:
   using: 'composite'