Bump Alexa.NET from 1.14.0 to 1.15.0 in /BlazorTemplate/Server

Bumps [Alexa.NET](https://github.com/timheuer/alexa-skills-dotnet) from 1.14.0 to 1.15.0.
- [Release notes](https://github.com/timheuer/alexa-skills-dotnet/releases)
- [Commits](https://github.com/timheuer/alexa-skills-dotnet/commits)

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

Author: dependabot[bot]

BlazorTemplate/Server/BlazorTemplate.Server.csproj

@@ -6,7 +6,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-	  <PackageReference Include="Alexa.NET" Version="1.14.0" />
+	  <PackageReference Include="Alexa.NET" Version="1.15.0" />
 	  <PackageReference Include="Grpc.AspNetCore" Version="2.34.0" />
 	  <PackageReference Include="Grpc.AspNetCore.Web" Version="2.34.0" />
   </ItemGroup>