Create update_version (#124)

.github/workflows/update_version

@@ -0,0 +1,30 @@
+name: Update Release Version
+
+on:
+  release:
+    types: [published]
+
+jobs:
+  update-version:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v2
+      with:
+        token: ${{ secrets.GITHUB_TOKEN }}
+
+    - name: Get release tag
+      id: get_tag
+      run: echo "RELEASE_TAG=$(echo ${GITHUB_REF#refs/tags/})" >> $GITHUB_ENV
+
+    - name: Create release version file
+      run: echo "${{ env.RELEASE_TAG }}" > release_version.txt
+
+    - name: Commit release version file
+      run: |
+        git config --global user.name 'github-actions[bot]'
+        git config --global user.email 'github-actions[bot]@users.noreply.github.com'
+        git add release_version.txt
+        git commit -m "Update release version to ${{ env.RELEASE_TAG }}"
+        git push