Replace unpinned actions with pinned action

.github/workflows/npm-gulp.yml

@@ -1,27 +1,21 @@
 name: NodeJS with Gulp
-
 on:
   push:
-    branches: [ "main" ]
+    branches: ["main"]
   pull_request:
-    branches: [ "main" ]
-
+    branches: ["main"]
 jobs:
   build:
     runs-on: ubuntu-latest
-
     strategy:
       matrix:
         node-version: [14.x, 16.x, 18.x]
-
     steps:
-    - uses: actions/checkout@v3
-
-    - name: Use Node.js ${{ matrix.node-version }}
-      uses: actions/setup-node@v3
-      with:
-        node-version: ${{ matrix.node-version }}
-
-    - name: Build
-      run: |
-        npm install
+      - uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 # v3
+      - name: Use Node.js ${{ matrix.node-version }}
+        uses: actions/setup-node@1a4442cacd436585916779262731d5b162bc6ec7 # v3
+        with:
+          node-version: ${{ matrix.node-version }}
+      - name: Build
+        run: |
+          npm install