Upgrade actions/cache to v4 (#130)

Signed-off-by: David Zane <[email protected]>
(cherry picked from commit 93ddb97)
Signed-off-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

Author: github-actions[bot]

.github/workflows/cypress-tests.yml

@@ -122,7 +122,7 @@ jobs:
 
       - name: Cache Cypress
         id: cache-cypress
-        uses: actions/cache@v2
+        uses: actions/cache@v4
         with:
           path: ${{ matrix.cypress_cache_folder }}
           key: cypress-cache-v2-${{ matrix.os }}-${{ hashFiles('OpenSearch-Dashboards/plugins/query-insights-dashboards/package.json') }}