Disk cache getRemoteJSON (#35872)

.github/workflows/test.yml

@@ -153,6 +153,15 @@ jobs:
       - name: Run build script
         run: npm run build
 
+      - name: Disk cache used by getRemoteJSON function in middleware
+        uses: actions/cache@9b0c1fce7a93df8e3bb8926b0d6e9d89e92f20a7
+        with:
+          path: .remotejson-cache
+          # Very liberal cache key. Note, for this to become populated
+          # for other branches, you have to manually run this workflow
+          # at least once using the "Run workflow" button.
+          key: ${{ runner.os }}-remotejson
+
       - name: Index fixtures into the local Elasticsearch
         # For the sake of saving time, only run this step if the group
         # is one that will run tests against an Elasticsearch on localhost.