Bump Microsoft.Azure.Functions.Worker.Sdk in /src/FunctionApp

Bumps [Microsoft.Azure.Functions.Worker.Sdk](https://github.com/Azure/azure-functions-dotnet-worker) from 1.12.0 to 1.15.1.
- [Release notes](https://github.com/Azure/azure-functions-dotnet-worker/releases)
- [Changelog](https://github.com/Azure/azure-functions-dotnet-worker/blob/main/release_notes.md)
- [Commits](https://github.com/Azure/azure-functions-dotnet-worker/commits)

---
updated-dependencies:
- dependency-name: Microsoft.Azure.Functions.Worker.Sdk
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

src/FunctionApp/FunctionApp.csproj

@@ -29,7 +29,7 @@
         <PackageReference Include="Microsoft.Azure.Functions.Worker.Extensions.Http" Version="3.0.13" />
         <PackageReference Include="Microsoft.Azure.Functions.Worker.Extensions.Storage.Queues" Version="5.1.2" />
         <PackageReference Include="Microsoft.Azure.Functions.Worker.Extensions.Timer" Version="4.2.0" />
-        <PackageReference Include="Microsoft.Azure.Functions.Worker.Sdk" Version="1.12.0" />
+        <PackageReference Include="Microsoft.Azure.Functions.Worker.Sdk" Version="1.15.1" />
     </ItemGroup>
     <ItemGroup>
         <None Update="host.json">