ci: update build action

Author: wan92hen

.github/workflows/mike-deploy.yml

@@ -17,10 +17,10 @@ jobs:
       with:
         python-version: '3.x'
     - name: Split branch name
-        env:
-          BRANCH: ${{ github.ref_name }}
-        id: split
-        run: echo "version=${BRANCH##*/}" >> $GITHUB_OUTPUT
+      env:
+        BRANCH: ${{ github.ref_name }}
+      id: split
+      run: echo "version=${BRANCH##*/}" >> $GITHUB_OUTPUT
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip setuptools wheel