chore(deps): update dependency dotnext.metaprogramming to v5.0.3

Signed-off-by: noreply@rainote.dev

Rai.PacketMediator.csproj

@@ -14,7 +14,7 @@
 
   <ItemGroup>
     <PackageReference Include="DotNext" Version="5.0.2" />
-    <PackageReference Include="DotNext.Metaprogramming" Version="5.0.2" />
+    <PackageReference Include="DotNext.Metaprogramming" Version="5.0.3" />
     <PackageReference Include="JetBrains.Annotations" Version="2023.3.0"/>
     <PackageReference Include="Meziantou.Analyzer" Version="2.0.143">
       <PrivateAssets>all</PrivateAssets>