Update dotnet monorepo to v9

Author: renovate[bot]

src/ElectricityMap.DotNet.Client/ElectricityMap.DotNet.Client.csproj

@@ -20,7 +20,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.Extensions.DependencyInjection.Abstractions" Version="5.0.0" />
+    <PackageReference Include="Microsoft.Extensions.DependencyInjection.Abstractions" Version="9.0.9" />
     <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
     <PackageReference Include="System.Collections" Version="4.3.0" />
   </ItemGroup>

test/ElectricityMap.DotNet.Client.Test/ElectricityMap.DotNet.Client.Test.csproj

@@ -14,7 +14,7 @@
     <PackageReference Include="AutoFixture.AutoNSubstitute" Version="4.16.0" />
     <PackageReference Include="AutoFixture.Xunit2" Version="4.16.0" />
     <PackageReference Include="FluentAssertions" Version="5.10.3" />
-    <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="5.0.1" />
+    <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="9.0.9" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.5.0" />
     <PackageReference Include="Moq" Version="4.14.7" />
     <PackageReference Include="NSubstitute" Version="4.2.2" />