Avoid Node.js setup cache restore delays

Downgrades to v3 to avoid a bug in GitHub actions/cache
actions/cache#810

Cache restore times for ~/.npm going over 5 minutes

.github/workflows/actions/setup-node/action.yml

@@ -11,7 +11,7 @@ runs:
 
   steps:
     - name: Setup Node.js
-      uses: actions/setup-node@v4.0.0
+      uses: actions/setup-node@v3.8.2
       id: setup-node
 
       with:

.github/workflows/sass.yaml

@@ -25,7 +25,7 @@ jobs:
         uses: actions/[email protected]
 
       - name: Setup Node.js
-        uses: actions/setup-node@v4.0.0
+        uses: actions/setup-node@v3.8.2
         with:
           cache: npm
           node-version: 8 # Node.js 8 supported by Dart Sass v1.0.0
@@ -47,7 +47,7 @@ jobs:
         uses: actions/[email protected]
 
       - name: Setup Node.js
-        uses: actions/setup-node@v4.0.0
+        uses: actions/setup-node@v3.8.2
         with:
           cache: npm
           check-latest: true
@@ -77,7 +77,7 @@ jobs:
         uses: actions/[email protected]
 
       - name: Setup Node.js
-        uses: actions/setup-node@v4.0.0
+        uses: actions/setup-node@v3.8.2
         with:
           cache: npm
           node-version: 4 # Node.js 4 supported by Node Sass v3.4.0
@@ -100,7 +100,7 @@ jobs:
         uses: actions/[email protected]
 
       - name: Setup Node.js
-        uses: actions/setup-node@v4.0.0
+        uses: actions/setup-node@v3.8.2
         with:
           cache: npm
           check-latest: true

.github/workflows/tests.yml

@@ -275,7 +275,7 @@ jobs:
         uses: ./.github/workflows/actions/build
 
       - name: Change Node.js version
-        uses: actions/setup-node@v4.0.0
+        uses: actions/setup-node@v3.8.2
         with:
           node-version: ${{ matrix.node-version }}