Update main.yaml

.github/workflows/main.yaml

@@ -41,7 +41,7 @@ jobs:
           fetch-depth: 0
       - name: Find latest beta tag
         run: |
-          echo "LATEST_TAG=$(git describe --tags $(git rev-list --tags="*-beta*" --max-count=1)) >> $GITHUB_ENV
+          echo "LATEST_TAG=$(git describe --tags $(git rev-list --tags="*-beta*" --max-count=1))" >> $GITHUB_ENV
           echo "latest tag is $LATEST_TAG"
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v3.0.0