added action caching to speedup releases

Author: fstasi

.github/workflows/publish.yml

@@ -12,6 +12,12 @@ jobs:
       - uses: actions/setup-node@v2
         with:
           node-version: 10
+      - uses: actions/cache@v2
+        with:
+          path: ~/.npm
+          key: ${{ runner.os }}-node-${{ hashFiles('**/package-lock.json') }}
+          restore-keys: |
+            ${{ runner.os }}-node-
       - run: npm install
       # TODO: enable test as soon as they are implemented
       # - run: npm test