refactor: use a GitHub actions and a more permissive regex

Author: gagik

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

@@ -3,9 +3,12 @@ name: Merge Release Tag
 on:
   push:
     tags:
-      - 'mongosh@[0-9]+.[0-9]+.[0-9]+'
+      - 'mongosh@[0-9]+.[0-9]+.*'
   workflow_dispatch:
 
+permissions:
+  contents: none # We use the github app to checkout and push tags
+
 jobs:
   merge-release-tag:
     runs-on: ubuntu-latest
@@ -24,31 +27,31 @@ jobs:
           token: ${{ steps.app-token.outputs.token }}
 
       - name: Extract version from tag
-        id: version
-        run: echo "RELEASE_VERSION=$(echo ${GITHUB_REF} | sed -n 's/refs\/tags\/mongosh@\([0-9]\+\.[0-9]\+\.[0-9]\+\)/\1/p')" >> $GITHUB_ENV
+        uses: actions-ecosystem/action-regex-match@d50fd2e7a37d0e617aea3d7ada663bd56862b9cc
+        id: version-match
+        with:
+          text: ${{ github.ref }}
+          regex: 'refs/tags/mongosh@([0-9]+\.[0-9]+\.*)'
 
       - name: Validate release version
         shell: bash
+        id: validate
         run: |
-          if [ -z "${RELEASE_VERSION}" ]; then
-            echo "RELEASE_TAG is not set or is empty"
+          if [[ -z "${{ steps.version-match.outputs.group1 }}" ]]; then
+            echo "Error: Could not extract version from tag"
             exit 1
           fi
 
-          if git rev-parse "release/v$RELEASE_VERSION" >/dev/null 2>&1; then
+          if git rev-parse "release/v${{ steps.version-match.outputs.group1 }}" >/dev/null 2>&1; then
             echo "Error: Branch release/v$RELEASE_TAG already exists"
             echo "If this version has already been released consider using a different one."
             exit 1
           fi
+          echo "::set-output name=version::${{ steps.version-match.outputs.group1 }}"
 
-      - name: Create and push branch from tag
-        run: |
-          git checkout -b release/v$RELEASE_VERSION ${{ github.ref }}
-          git push origin release/v$RELEASE_VERSION
-
-      - name: Merge branch into main
+      - name: Merge release tag into main
         run: |
+          git checkout -b release/v${{ steps.validate.outputs.version }} ${{ github.ref }}
           git checkout main
-          git merge release/v$RELEASE_VERSION
+          git merge release/v${{ steps.validate.outputs.version }}
           git push origin main
-          git push -d origin release/v$RELEASE_VERSION