Bump Azure.Core from 1.41.0 to 1.42.0 in /tests/authentication/azure

Bumps [Azure.Core](https://github.com/Azure/azure-sdk-for-net) from 1.41.0 to 1.42.0.
- [Release notes](https://github.com/Azure/azure-sdk-for-net/releases)
- [Commits](Azure/azure-sdk-for-net@Azure.Core_1.41.0...Azure.Core_1.42.0)

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

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

src/authentication/azure/Microsoft.Kiota.Authentication.Azure.csproj

@@ -10,7 +10,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Azure.Core" Version="1.41.0" />
+    <PackageReference Include="Azure.Core" Version="1.42.0" />
     <ProjectReference Include="..\..\abstractions\Microsoft.Kiota.Abstractions.csproj" />
   </ItemGroup>