fix submodule checkout

.github/workflows/test.yml

@@ -26,8 +26,8 @@ jobs:
     name: macOS
     steps:
     - uses: actions/checkout@master
-    - name: Checkout submodules
-      uses: textbook/git-checkout-submodule-action@master
+      with:
+      submodules: recursive
     - name: Select Xcode version
       run: sudo xcode-select -s /Applications/Xcode_${{ matrix.xcode }}.app; swift -version
     - name: Get Swift Version
@@ -74,8 +74,8 @@ jobs:
         echo "::set-output name=version::$(swift -version | head -n 1 | sed s/,// )"
       shell: bash
     - uses: actions/checkout@master
-    - name: Checkout submodules
-      uses: textbook/git-checkout-submodule-action@master
+      with:
+      submodules: recursive
     - name: Cache resolved dependencies
       id: cache-resolved-dependencies
       uses: actions/cache@v2