Refactor build step in release workflow to simplify versioning

.github/workflows/release.yml

@@ -32,8 +32,7 @@ jobs:
 
       - name: Build
         run: |
-          $ver = '${{ github.ref_name }}'
-          dotnet build --no-restore --configuration Release -p:Version=$ver -p:AssemblyVersion=$ver -p:FileVersion=$ver
+        run: dotnet build --configuration Release CharacterSelectPlugin/CharacterSelectPlugin.csproj -p:AssemblyVersion=${{ github.ref_name }}
 
       - name: Create Release
         uses: actions/create-release@v1