fix: Update Data Model Dependencies CI

Author: nickevansuk

.github/workflows/create-data-model-pr.yaml

@@ -31,7 +31,7 @@ jobs:
 
       - name: Create Pull Request
         id: cpr
-        uses: peter-evans/create-pull-request@v4
+        uses: peter-evans/create-pull-request@v7
         with:
           token: ${{ secrets.PUBLIC_REPO_ACCESS_TOKEN }}
           path: ./openactive-test-suite/