build(deps): bump Microsoft.Identity.Web in /src/GraphWebhooks

Bumps [Microsoft.Identity.Web](https://github.com/AzureAD/microsoft-identity-web) from 3.2.0 to 3.2.1.
- [Release notes](https://github.com/AzureAD/microsoft-identity-web/releases)
- [Changelog](https://github.com/AzureAD/microsoft-identity-web/blob/master/changelog.md)
- [Commits](AzureAD/microsoft-identity-web@3.2.0...3.2.1)

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

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

src/GraphWebhooks/GraphWebhooks.csproj

@@ -16,7 +16,7 @@
     <PackageReference Include="Azure.Identity" Version="1.12.1" />
     <PackageReference Include="Azure.Security.KeyVault.Certificates" Version="4.6.0" />
     <PackageReference Include="Azure.Security.KeyVault.Secrets" Version="4.6.0" />
-    <PackageReference Include="Microsoft.Identity.Web" Version="3.2.0" />
+    <PackageReference Include="Microsoft.Identity.Web" Version="3.2.1" />
     <PackageReference Include="Microsoft.Identity.Web.GraphServiceClient" Version="3.2.0" />
     <PackageReference Include="Microsoft.Identity.Web.UI" Version="3.2.0" />
     <PackageReference Include="StyleCop.Analyzers" Version="1.2.0-beta.556">