fix: release.yml not supporting b0.X.X

.gitea/workflows/release.yaml

@@ -18,7 +18,7 @@ jobs:
     steps:
       - name: Validate version format
         run: |
-          if (-not ("${{ inputs.version }}" -match '^v\d+\.\d+\.\d+[a-zA-Z0-9.-]*$')) {
+          if (-not ("${{ inputs.version }}" -match '^[vb]\d+\.\d+\.\d+[a-zA-Z0-9.-]*$')) {
             Write-Error "Version '${{ inputs.version }}' doesn't match expected format (e.g. v1.0.0)"
             exit 1
           }