Bump Microsoft.Identity.Web.GraphServiceClient from 4.14.2 to 4.15.0

---
updated-dependencies:
- dependency-name: Microsoft.Identity.Web.GraphServiceClient
  dependency-version: 4.15.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

api/BudgetTracker.csproj

@@ -35,7 +35,7 @@
       <PrivateAssets>all</PrivateAssets>
     </PackageReference>
     <PackageReference Include="Microsoft.Identity.Web" Version="4.14.2" />
-    <PackageReference Include="Microsoft.Identity.Web.GraphServiceClient" Version="4.14.2" />
+    <PackageReference Include="Microsoft.Identity.Web.GraphServiceClient" Version="4.15.0" />
     <PackageReference Include="StyleCop.Analyzers" Version="1.2.0-beta.556">
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
       <PrivateAssets>all</PrivateAssets>