build commits tag version to readme

Author: jenschude

.github/workflows/release.yml

@@ -80,9 +80,20 @@ jobs:
           draft: true
           prerelease: false
 
-#      - uses: stefanzweifel/git-auto-commit-action@v4
-#        with:
-#          commit_message: "TASK: Updating version in README"
-#          commit_user_name: Auto Mation
-#          commit_user_email: automation@commercetools.com
-#          commit_author: Auto Mation <automation@commercetools.com>
+      - name: Checkout
+        uses: actions/checkout@v2
+        with:
+          path: build_master
+
+      - run: ./gradlew -Pversion=$SOURCE_TAG writeVersionToReadme
+        working-directory: build_master
+        env:
+          SOURCE_TAG: ${{ steps.branch_name.outputs.SOURCE_TAG }}
+
+      - uses: stefanzweifel/git-auto-commit-action@v4
+        with:
+          repository: build_master
+          commit_message: "TASK: Updating version in README"
+          commit_user_name: Auto Mation
+          commit_user_email: automation@commercetools.com
+          commit_author: Auto Mation <automation@commercetools.com>