Use new commit sha for release

.github/workflows/bump-version.yml

@@ -17,12 +17,16 @@ jobs:
         python-version: '3.x'
     - run: pip install -r script/requirements.txt
     - run: script/bump-version.py ${{ github.event.inputs.version }}
-    - run: |
+    - name: Commit version bump
+      id: commit_version
+      run: |
         git config user.name esphomebot
         git config user.email contact@esphome.io
         git add .
         git commit -m "Bump version to v${{ github.event.inputs.version }}"
         git push
+        COMMIT=$(git rev-parse HEAD)
+        echo "::set-output name=commit_sha::${COMMIT}"
     - if: ${{ contains(github.event.inputs.version, 'b') }}
       name: Create Beta Release
       uses: actions/create-release@v1
@@ -33,6 +37,7 @@ jobs:
         release_name: ${{ github.event.inputs.version }}
         body: 'See https://beta.esphome.io/changelog/index.html'
         prerelease: true
+        commitish: ${{ steps.commit_version.outputs.commit_sha }}  
     - if: ${{ !contains(github.event.inputs.version, 'b') }}
       name: Create Stable Release
       uses: actions/create-release@v1
@@ -43,6 +48,7 @@ jobs:
         release_name: ${{ github.event.inputs.version }}
         body: 'See https://esphome.io/changelog/index.html'
         prerelease: false
+        commitish: ${{ steps.commit_version.outputs.commit_sha }} 
 
 
   deploy-community-addons: