Update release.yml

Author: egil

.github/workflows/release.yml

@@ -106,23 +106,19 @@ jobs:
           prerelease: ${{ env.NBGV_PublicRelease == 'False' }}
 
       - name: ☑ Check if merge of stable to main is possible
-        shell: bash
-        continue-on-error: true
         run: |
           git checkout main
           git merge --no-commit --no-ff stable
-          echo echo "CAN_MERGE_STABLE_WITH_MAIN=$($? == 0)" >> $GITHUB_ENV
-          git merge --abort
       
       - name: ⏩ Merge stable with main, push main        
-        if: ${{ env.CAN_MERGE_STABLE_WITH_MAIN == true }}
+        if: ${{ success() }}
         run: | 
-          git checkout main
+          git merge --abort
           git merge -S stable
           git push origin main
           
       - name: ⏭ Create pull request from stable to main
-        if: ${{ env.CAN_MERGE_STABLE_WITH_MAIN == false }}
+        if: ${{ failure() }}
         uses: thomaseizinger/create-pull-request@1.0.0
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}