Configures submodule checkout for workflow

Enables recursive submodule checkout in the version change workflow.

This ensures that all submodules, including nested ones, are properly
initialized, which is necessary for the workflow to function correctly.
Also, it passes a token to authenticate the submodule retrieval.

Author: raganmd

.github/workflows/push-on-version-change.yaml

@@ -11,6 +11,8 @@ jobs:
       - name: Check out repository code
         uses: actions/checkout@v4
         with:
+          submodules: 'recursive'
+          token: ${{secrets.SUBMODULE.PAT}}
           fetch-depth: 0
           fetch-tags: true
           submodules: true