Bump version to 0.3.1 in project file

Author: waldekmastykarz

DevProxy.Hosting/DevProxy.Hosting.csproj

@@ -4,7 +4,7 @@
     <TargetFrameworks>net10.0;net9.0;net8.0</TargetFrameworks>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
-    <Version>0.3.0</Version>
+    <Version>0.3.1</Version>
     <Authors>Dev Proxy</Authors>
     <Title>Dev Proxy .NET Aspire extensions</Title>
     <Description>.NET Aspire extensions for adding Dev Proxy as a resource to your .NET Aspire application.</Description>