Bump MudBlazor from 6.1.8 to 6.1.9 in /src (#1773)

Bumps [MudBlazor](https://github.com/MudBlazor/MudBlazor) from 6.1.8 to 6.1.9.
- [Release notes](https://github.com/MudBlazor/MudBlazor/releases)
- [Changelog](https://github.com/MudBlazor/MudBlazor/blob/dev/CHANGELOG.md)
- [Commits](MudBlazor/MudBlazor@v6.1.8...v6.1.9)

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

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

src/AzureIoTHub.Portal.Client/AzureIoTHub.Portal.Client.csproj

@@ -25,7 +25,7 @@
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
-    <PackageReference Include="MudBlazor" Version="6.1.8" />
+    <PackageReference Include="MudBlazor" Version="6.1.9" />
     <PackageReference Include="Newtonsoft.Json" Version="13.0.2" />
     <PackageReference Include="System.Net.Http.Json" Version="7.0.0" />
     <PackageReference Include="Tewr.Blazor.FileReader" Version="3.3.1.21360" />

src/AzureIoTHub.Portal.Server/AzureIoTHub.Portal.Server.csproj

@@ -65,7 +65,7 @@
     <PackageReference Include="Microsoft.VisualStudio.Azure.Containers.Tools.Targets" Version="1.17.0" />
     <PackageReference Include="Microsoft.Identity.Web" Version="1.26.0" />
     <PackageReference Include="Microsoft.Identity.Web.UI" Version="1.26.0" />
-    <PackageReference Include="MudBlazor" Version="6.1.8" />
+    <PackageReference Include="MudBlazor" Version="6.1.9" />
     <PackageReference Include="NetEscapades.AspNetCore.SecurityHeaders" Version="0.18.0" />
     <PackageReference Include="Newtonsoft.Json" Version="13.0.2" />
     <PackageReference Include="prometheus-net.AspNetCore" Version="7.0.0" />

src/AzureIoTHub.Portal.Shared/AzureIoTHub.Portal.Shared.csproj

@@ -27,7 +27,7 @@
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
-    <PackageReference Include="MudBlazor" Version="6.1.8" />
+    <PackageReference Include="MudBlazor" Version="6.1.9" />
     <PackageReference Include="xunit.extensibility.core" Version="2.4.2" />
     <PackageReference Include="xunit.extensibility.execution" Version="2.4.2" />
   </ItemGroup>