chore(deps): update actions/cache action to v6 (cypress-io#1812)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/example-install-only.yml

@@ -23,7 +23,7 @@ jobs:
       # (which is important when using ^ version in package.json)
       # see https://github.com/actions/cache
       - name: Cache npm and Cypress 📦
-        uses: actions/cache@v5
+        uses: actions/cache@v6
         with:
           path: |
             ~/.cache/Cypress