nuget: bump DiscordRichPresence from 1.1.3.18 to 1.2.1.24 (#5515)

Bumps [DiscordRichPresence](https://github.com/Lachee/discord-rpc-csharp) from 1.1.3.18 to 1.2.1.24.
- [Release notes](https://github.com/Lachee/discord-rpc-csharp/releases)
- [Commits](https://github.com/Lachee/discord-rpc-csharp/commits)

---
updated-dependencies:
- dependency-name: DiscordRichPresence
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Directory.Packages.props

@@ -12,7 +12,7 @@
     <PackageVersion Include="Avalonia.Svg.Skia" Version="0.10.18" />
     <PackageVersion Include="CommandLineParser" Version="2.9.1" />
     <PackageVersion Include="Concentus" Version="1.1.7" />
-    <PackageVersion Include="DiscordRichPresence" Version="1.1.3.18" />
+    <PackageVersion Include="DiscordRichPresence" Version="1.2.1.24" />
     <PackageVersion Include="DynamicData" Version="7.14.2" />
     <PackageVersion Include="FluentAvaloniaUI" Version="1.4.5" />
     <PackageVersion Include="GtkSharp.Dependencies" Version="1.1.1" />