Update auto-merge to 2.3.3 branch

Author: mkmuir0

.github/workflows/auto-merge.yml

@@ -22,7 +22,7 @@ jobs:
       - uses: actions/checkout@v2
         with:
           fetch-depth: 0
-          ref: 2.3.2-release
+          ref: 2.3.3-release
 
       - name: merge commits from main to release branch
         run: |