deps(nuget): Bump the mudblazor group with 1 update

Bumps MudBlazor from 8.0.0 to 8.15.0

---
updated-dependencies:
- dependency-name: MudBlazor
  dependency-version: 8.15.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: mudblazor
...

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

Author: dependabot[bot]

samples/BlazorWasm.Basic/Client/BlazorWasm.Basic.Client.csproj

@@ -9,7 +9,7 @@
   <ItemGroup>
     <PackageReference Include="Microsoft.AspNetCore.Components.WebAssembly" Version="9.0.0" />
     <PackageReference Include="Microsoft.AspNetCore.Components.WebAssembly.DevServer" Version="9.0.0" PrivateAssets="all" />
-    <PackageReference Include="MudBlazor" Version="8.0.0" />
+    <PackageReference Include="MudBlazor" Version="8.15.0" />
   </ItemGroup>
 
   <ItemGroup>

src/LionFire.AgUi.Blazor.MudBlazor/LionFire.AgUi.Blazor.MudBlazor.csproj

@@ -23,7 +23,7 @@
 
   <ItemGroup>
     <PackageReference Include="Markdig" Version="0.38.0" />
-    <PackageReference Include="MudBlazor" Version="8.0.0" />
+    <PackageReference Include="MudBlazor" Version="8.15.0" />
   </ItemGroup>
 
   <ItemGroup>