build: cache dependencies in lint_changed_files workflow

Signed-off-by: Philipp Burckhardt <[email protected]>

.github/workflows/lint_changed_files.yml

@@ -72,8 +72,21 @@ jobs:
           node-version: '20' # 'lts/*'
         timeout-minutes: 5
 
+      # Cache dependencies:
+      - name: 'Cache dependencies'
+        # Pin action to full length commit SHA
+        uses: actions/cache@6849a6489940f00c2f30c0fb92c6274307ccb58a # v4.1.2
+        id: cache
+        with:
+          path: |
+            ${{ github.workspace }}/node_modules
+          key: ${{ runner.os }}-node-${{ hashFiles('**/package.json') }}
+          restore-keys: |
+            ${{ runner.os }}-node-
+
       # Install dependencies (accounting for possible network failures, etc, when installing node module dependencies):
       - name: 'Install dependencies'
+        if: steps.cache.outputs.cache-hit != 'true'
         run: |
           make install-node-modules || make install-node-modules || make install-node-modules
         timeout-minutes: 15