chore(deps): Bump System.Buffers from 4.5.1 to 4.6.0 in /src

Bumps [System.Buffers](https://github.com/dotnet/maintenance-packages) from 4.5.1 to 4.6.0.
- [Release notes](https://github.com/dotnet/maintenance-packages/releases)
- [Commits](https://github.com/dotnet/maintenance-packages/commits)

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

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

src/AccessibilityInsights.Extensions.AzureDevOps/Extensions.AzureDevOps.csproj

@@ -32,7 +32,7 @@
     <PackageReference Include="Microsoft.VisualStudio.Services.InteractiveClient" Version="19.227.0-preview" />
     <PackageReference Include="Microsoft.Web.WebView2" Version="1.0.2849.39" />
     <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
-    <PackageReference Include="System.Buffers" Version="4.5.1" />
+    <PackageReference Include="System.Buffers" Version="4.6.0" />
     <PackageReference Include="System.IdentityModel.Tokens.Jwt" Version="8.1.2" />
     <PackageReference Include="System.Memory" Version="4.5.5" />
     <PackageReference Include="System.Numerics.Vectors" Version="4.5.0" />