add submodule to checkout

Signed-off-by: Thomas Poignant <thomas.poignant@gofeatureflag.org>

Author: thomaspoignant

.github/workflows/ci.yml

@@ -24,6 +24,8 @@ jobs:
     steps:
       - name: Checkout Repository
         uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4
+        with:
+          submodules: recursive
 
       - name: Set up JDK ${{ matrix.build.java }}
         uses: actions/setup-java@c5195efecf7bdfc987ee8bae7a71cb8b11521c00 # v4