Bump RestSharp from 108.0.1 to 112.0.0 in /src/GregClient

Bumps [RestSharp](https://github.com/restsharp/RestSharp) from 108.0.1 to 112.0.0.
- [Release notes](https://github.com/restsharp/RestSharp/releases)
- [Commits](restsharp/RestSharp@108.0.1...112.0.0)

---
updated-dependencies:
- dependency-name: RestSharp
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

src/GregClient/GregClient.csproj

@@ -26,7 +26,7 @@
   </PropertyGroup>
 
   <ItemGroup Label="Common package dependencies">
-    <PackageReference Include="RestSharp" Version="108.0.1" />
+    <PackageReference Include="RestSharp" Version="112.0.0" />
   </ItemGroup>
   <ItemGroup>
     <None Include="..\..\CHANGELOG.md">