Bump Discord.Net from 2.2.0 to 2.3.1

Bumps [Discord.Net](https://github.com/RogueException/Discord.Net) from 2.2.0 to 2.3.1.
- [Release notes](https://github.com/RogueException/Discord.Net/releases)
- [Changelog](https://github.com/discord-net/Discord.Net/blob/dev/CHANGELOG.md)
- [Commits](discord-net/Discord.Net@2.2.0...2.3.1)

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

PogFish/PogFIsh.csproj

@@ -9,7 +9,7 @@
 
   <ItemGroup>
     <PackageReference Include="Discord.Addons.Hosting" Version="3.1.1" />
-    <PackageReference Include="Discord.Net" Version="2.2.0" />
+    <PackageReference Include="Discord.Net" Version="2.3.1" />
     <PackageReference Include="Discord.Net.Commands" Version="2.2.0" />
     <PackageReference Include="Discord.Net.Core" Version="2.2.0" />
     <PackageReference Include="Discord.Net.WebSocket" Version="2.2.0" />