Bump System.Configuration.ConfigurationManager from 9.0.2 to 9.0.3

Bumps [System.Configuration.ConfigurationManager](https://github.com/dotnet/runtime) from 9.0.2 to 9.0.3.
- [Release notes](https://github.com/dotnet/runtime/releases)
- [Commits](https://github.com/dotnet/runtime/compare/v9.0.2...v9.0.3)

---
updated-dependencies:
- dependency-name: System.Configuration.ConfigurationManager
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

OhmGraphite/OhmGraphite.csproj

@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
@@ -43,7 +43,7 @@
     <PackageReference Include="Npgsql" Version="9.0.3" />
     <PackageReference Include="prometheus-net" Version="8.2.1" />
     <PackageReference Include="System.CommandLine" Version="2.0.0-beta4.22272.1" />
-    <PackageReference Include="System.Configuration.ConfigurationManager" Version="9.0.2" />
+    <PackageReference Include="System.Configuration.ConfigurationManager" Version="9.0.3" />
     <PackageReference Include="InfluxDB.LineProtocol" Version="1.1.1" />
   </ItemGroup>