fix bash syntax

Author: voltaney

.github/workflows/release-packages.yml

@@ -22,8 +22,7 @@ jobs:
       - name: Set VERSION variable from tag
         shell: bash
         run: |
-          $version = "${{ github.ref_name }}" -replace '^v', ''
-          echo "VERSION=$version" >> $GITHUB_ENV
+          echo "VERSION=${GITHUB_REF_NAME#v}" >> $GITHUB_ENV
 
       - name: Set archive name
         shell: bash