Build: Simplify caching in CI

Our setup is pretty standard, so manual configuration of `actions/cache` is
an overkill. Relying on built-in `actions/node` caching will also resolve
differences between caching configurations for macOS/Linux vs. Windows.

Author: mgol

.github/workflows/browser-tests.yml

@@ -37,14 +37,8 @@ jobs:
         uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020 # v4.4.0
         with:
           node-version: ${{ env.NODE_VERSION }}
-
-      - name: Cache
-        uses: actions/cache@0400d5f644dc74513175e3cd8d07132dd4860809 # v4.2.4
-        with:
-          path: ~/.npm
-          key: ${{ runner.os }}-node-${{ env.NODE_VERSION }}-npm-lock-${{ hashFiles('**/package-lock.json') }}
-          restore-keys: |
-            ${{ runner.os }}-node-${{ env.NODE_VERSION }}-npm-lock-
+          cache: npm
+          cache-dependency-path: '**/package-lock.json'
 
       - name: Set download URL for Firefox ESR (old)
         run: |
@@ -92,14 +86,8 @@ jobs:
         uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020 # v4.4.0
         with:
           node-version: ${{ env.NODE_VERSION }}
-
-      - name: Cache
-        uses: actions/cache@0400d5f644dc74513175e3cd8d07132dd4860809 # v4.2.4
-        with:
-          path: ~/.npm
-          key: ${{ runner.os }}-node-${{ env.NODE_VERSION }}-npm-lock-${{ hashFiles('**/package-lock.json') }}
-          restore-keys: |
-            ${{ runner.os }}-node-${{ env.NODE_VERSION }}-npm-lock-
+          cache: npm
+          cache-dependency-path: '**/package-lock.json'
 
       - name: Install dependencies
         run: npm install
@@ -121,14 +109,8 @@ jobs:
         uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020 # v4.4.0
         with:
           node-version: ${{ env.NODE_VERSION }}
-
-      - name: Cache
-        uses: actions/cache@0400d5f644dc74513175e3cd8d07132dd4860809 # v4.2.4
-        with:
-          path: ~/.npm
-          key: ${{ runner.os }}-node-${{ env.NODE_VERSION }}-npm-lock-${{ hashFiles('**/package-lock.json') }}
-          restore-keys: |
-            ${{ runner.os }}-node-${{ env.NODE_VERSION }}-npm-lock-
+          cache: npm
+          cache-dependency-path: '**/package-lock.json'
 
       - name: Install dependencies
         run: npm install