ci: Use a different (working) submodule checkout

Author: eemeli

.github/workflows/browsers.yml

@@ -10,10 +10,8 @@ jobs:
 
     steps:
       - uses: actions/checkout@v2
-      - name: Checkout submodules
-        uses: textbook/git-checkout-submodule-action@master
-      - name: Use Node.js
-        uses: actions/setup-node@v1
+        with: { submodules: true }
+      - uses: actions/setup-node@v2
         with:
           node-version: 14.x
       - name: Cache BrowserStackLocal

.github/workflows/nodejs.yml

@@ -15,10 +15,9 @@ jobs:
 
     steps:
       - uses: actions/checkout@v2
-      - name: Checkout submodules
-        uses: textbook/git-checkout-submodule-action@master
+        with: { submodules: true }
       - name: Use Node.js ${{ matrix.node-version }}
-        uses: actions/setup-node@v1
+        uses: actions/setup-node@v2
         with:
           node-version: ${{ matrix.node-version }}
       - run: npm ci
@@ -31,7 +30,7 @@ jobs:
     steps:
       - uses: actions/checkout@v2
       - name: Use Node.js
-        uses: actions/setup-node@v1
+        uses: actions/setup-node@v2
         with:
           node-version: 14.x
       - run: npm ci