Bump MudBlazor from 8.15.0 to 9.0.0

---
updated-dependencies:
- dependency-name: MudBlazor
  dependency-version: 9.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

Directory.Packages.props

@@ -30,7 +30,7 @@
     <PackageVersion Include="Npgsql" Version="10.0.1" />
     <!--Web UI-->
     <PackageVersion Include="Microsoft.AspNetCore.Components.Web" Version="10.0.2" />
-    <PackageVersion Include="MudBlazor" Version="8.15.0" />
+    <PackageVersion Include="MudBlazor" Version="9.0.0" />
     <PackageVersion Include="Scalar.AspNetCore" Version="2.12.36" />
     <PackageVersion Include="MaterialTheming" Version="1.2.3" />
     <!--OpenTelemetry Service Defaults-->