Bump pythonnet version

Author: glopesdev

src/Bonsai.Scripting.Python/Bonsai.Scripting.Python.csproj

@@ -11,7 +11,7 @@
 
   <ItemGroup>
     <PackageReference Include="Bonsai.Core" Version="2.7.0" />
-    <PackageReference Include="pythonnet" Version="3.0.1" />
+    <PackageReference Include="pythonnet" Version="3.0.3" />
   </ItemGroup>
 
 </Project>