Update catlips source gens to latest version

Author: valkyrienyanko

Template/Template.csproj

@@ -23,7 +23,7 @@
         <PackageReference Include="ENet-CSharp" Version="2.4.8" Condition="!Exists('ENet-CSharp.dll')" />
         <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
         <!-- https://github.com/Cat-Lips/GodotSharp.SourceGenerators -->
-        <PackageReference Include="GodotSharp.SourceGenerators" Version="2.7.0-260331-1947.Release" />
+        <PackageReference Include="GodotSharp.SourceGenerators" Version="2.7.0-260408-2121.Release " />
         <PackageReference Include="PacketGen" Version="1.3.27" />
         <PackageReference Include="Template.OptionsGen" Version="1.0.11" />