use recursive submodule checkout

.github/workflows/assemble.yml

@@ -17,6 +17,9 @@ jobs:
 
     steps:
       - uses: actions/checkout@v2
+        with:
+          submodules: 'recursive'
+          
       - uses: actions/setup-java@v3
         with:
           distribution: 'adopt'

.github/workflows/check_size.yml

@@ -14,6 +14,9 @@ jobs:
 
     steps:
       - uses: actions/checkout@v2
+        with:
+          submodules: 'recursive'
+
       - uses: actions/setup-java@v2
         with:
           distribution: 'adopt'

.github/workflows/release-candidate.yml

@@ -16,6 +16,9 @@ jobs:
 
     steps:
       - uses: actions/checkout@v2
+        with:
+          submodules: 'recursive'
+
       - uses: actions/setup-java@v2
         with:
           distribution: 'adopt'

.github/workflows/release-train.yml

@@ -16,6 +16,8 @@ jobs:
 
     steps:
       - uses: actions/checkout@v2
+        with:
+          submodules: 'recursive'
 
       - uses: actions/setup-node@v3
         with:

.github/workflows/test.yml

@@ -17,6 +17,8 @@ jobs:
 
     steps:
       - uses: actions/checkout@v2
+        with:
+          submodules: 'recursive'
       - uses: actions/setup-java@v2
         with:
           distribution: 'adopt'