Updated DependencyInjection package reference version to accept >= 3 (#58)

Co-authored-by: Leo <[email protected]>

Author: LeoHexspoor

src/prometheus-net.DotNetRuntime/prometheus-net.DotNetRuntime.csproj

@@ -30,6 +30,6 @@
     </ItemGroup>
 
     <ItemGroup>
-      <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="5.0.1" />
+      <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="[3,)" />
     </ItemGroup>
 </Project>