Bump NSubstitute from 5.0.0 to 5.1.0 (#83)

Bumps NSubstitute from 5.0.0 to 5.1.0.

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

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

DiscordTranslationBot.Tests/DiscordTranslationBot.Tests.csproj

@@ -8,7 +8,7 @@
     <ItemGroup>
         <PackageReference Include="FluentAssertions" Version="6.12.0"/>
         <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.7.2"/>
-        <PackageReference Include="NSubstitute" Version="5.0.0"/>
+        <PackageReference Include="NSubstitute" Version="5.1.0"/>
         <PackageReference Include="NSubstitute.Analyzers.CSharp" Version="1.0.16">
             <PrivateAssets>all</PrivateAssets>
             <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>