ci(auto-version-bump): quote JSON array (#4030)

Signed-off-by: Beth Griggs <bethanyngriggs@gmail.com>

Author: BethGriggs

.github/workflows/auto-version-bump.yml

@@ -42,7 +42,8 @@ jobs:
           GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         run: |
           echo "Triggering version bump for batch ${{ strategy.job-index }}"
-          json_input=${{ toJson(matrix.batch) }}
+          json_input='${{ toJson(matrix.batch) }}'
+          echo "Rendered json_input: $json_input"
           gh workflow run version-bump.yml \
             --ref main \
             --field release_line=main \