ci: remove obsolete use of actions/cache 2a59e56 (#570)

Co-authored-by: Gregor Martynus <[email protected]>

Author: renovate[bot]

.github/workflows/test.yml

@@ -37,12 +37,10 @@ jobs:
       - run: exit 1
         if: ${{ needs.test_matrix.result != 'success' }}
       - uses: actions/checkout@v3
-      - uses: actions/cache@12681847c623a9274356751fdf0a63576ff3f846
+      - uses: actions/setup-node@v3
         with:
-          path: ~/.npm
-          key: ${{ runner.os }}-node-${{ hashFiles('**/package-lock.json') }}
-          restore-keys: |
-            ${{ runner.os }}-node-
+          node-version: "lts/*"
+          cache: npm
       - run: npm ci
       - run: npm run lint
       - run: VERSION=`npm info @octokit/openapi version` npm run update-endpoints