Bump Octokit from 0.51.0 to 4.0.0

Bumps [Octokit](https://github.com/octokit/octokit.net) from 0.51.0 to 4.0.0.
- [Release notes](https://github.com/octokit/octokit.net/releases)
- [Changelog](https://github.com/octokit/octokit.net/blob/main/docs/releases.md)
- [Commits](octokit/octokit.net@v0.51.0...v4.0.0)

---
updated-dependencies:
- dependency-name: Octokit
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

TabletBot.Discord/TabletBot.Discord.csproj

@@ -8,7 +8,7 @@
   <ItemGroup>
     <PackageReference Include="Discord.Net" Version="3.7.2" />
     <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="6.0.1" />
-    <PackageReference Include="Octokit" Version="0.51.0" />
+    <PackageReference Include="Octokit" Version="4.0.0" />
   </ItemGroup>
 
   <ItemGroup>