Bump System.IdentityModel.Tokens.Jwt in /claim-check/code-samples (#166)

Bumps [System.IdentityModel.Tokens.Jwt](https://github.com/AzureAD/azure-activedirectory-identitymodel-extensions-for-dotnet) from 7.5.1 to 8.1.0.
- [Release notes](https://github.com/AzureAD/azure-activedirectory-identitymodel-extensions-for-dotnet/releases)
- [Changelog](https://github.com/AzureAD/azure-activedirectory-identitymodel-extensions-for-dotnet/blob/dev/CHANGELOG.md)
- [Commits](AzureAD/azure-activedirectory-identitymodel-extensions-for-dotnet@7.5.1...8.1.0)

---
updated-dependencies:
- dependency-name: System.IdentityModel.Tokens.Jwt
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

claim-check/code-samples/sample-4/ClientProducer4/ClientProducer4.csproj

@@ -25,7 +25,7 @@
 				<PackageReference Include="Confluent.Kafka" Version="2.5.3" />
 				<PackageReference Include="Microsoft.Extensions.Configuration" Version="8.0.0" />
 				<PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="8.0.0" />
-				<PackageReference Include="System.IdentityModel.Tokens.Jwt" Version="8.0.2" />
+				<PackageReference Include="System.IdentityModel.Tokens.Jwt" Version="8.1.0" />
 				<PackageReference Include="System.Text.RegularExpressions" Version="4.3.1" />
 				<PackageReference Include="Microsoft.Extensions.Logging" Version="8.0.0" />
 				<PackageReference Include="Microsoft.Extensions.Logging.Console" Version="8.0.0" />