Update github.pulls.create usage in update-deps workflow

Upgrading actions/github-script requires modifications to the script.

 .github/workflows/update-deps.yml

@@ -92,7 +92,7 @@
        with:
          github-token: ${{ env.GH_TOKEN }}
          script: |
            github.pulls.create({
            github.rest.pulls.create({
              owner: context.repo.owner,
              repo: context.repo.repo,
              head: 'feature/keycloak-update-${{ steps.vars.outputs.keycloakVersion }}',