fix: simplify the workflow

Author: gagik

.github/workflows/merge-release-tag.yml

@@ -22,26 +22,11 @@ jobs:
 
       - uses: actions/checkout@v4
         with:
-          ref: ${{ github.ref }}
+          ref: main
           fetch-depth: "0"
           token: ${{ steps.app-token.outputs.token }}
 
-      - name: Extract version from tag
-        uses: actions-ecosystem/action-regex-match@d50fd2e7a37d0e617aea3d7ada663bd56862b9cc
-        id: version-match
-        with:
-          text: ${{ github.ref }}
-          regex: 'refs/tags/mongosh@([0-9]+\.[0-9]+\.[0-9]+.*)'
-
-      - uses: actions/github-script@v7
-        if: steps.version-match.outputs.group1 == ''
-        with:
-          script: |
-            core.setFailed('Could not extract version from tag: ${{ github.ref }}');
-
       - name: Merge release tag into main
         run: |
-          git checkout -b package-release/v${{ steps.version-match.outputs.group1 }} ${{ github.ref }}
-          git checkout main
-          git merge package-release/v${{ steps.version-match.outputs.group1 }}
+          git merge ${{ github.ref }} -m "chore(release): merge changes from ${{ github.ref_name }}"
           git push origin main