Don't Look for Milestone when Managing Dependabot PRs

Signed-off-by: Josh Cummings <3627351+jzheaux@users.noreply.github.com>

Author: jzheaux

.github/workflows/dependabot-automerge.yml

@@ -14,4 +14,5 @@ jobs:
     uses: spring-io/spring-github-workflows/.github/workflows/spring-merge-dependabot-pr.yml@v7
     with:
       mergeArguments: --auto --rebase
+      autoMerge: true