Remove Auto-merge for .x Branches

Closes gh-19632

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

.github/workflows/auto-merge-dependabot.yml

@@ -4,7 +4,6 @@ on:
   pull_request:
     branches:
       - main
-      - '*.x'
       - 'docs-build'
 
 run-name: Merge Dependabot PR ${{ github.ref_name }}
@@ -14,4 +13,4 @@ jobs:
     permissions: write-all
     uses: spring-io/spring-github-workflows/.github/workflows/spring-merge-dependabot-pr.yml@0d3f15bb384839966a1ff5c4383731a2b747f24b # v7
     with:
-      mergeArguments: --auto --rebase
+      mergeArguments: --auto --rebase