Bump Microsoft.Extensions.Hosting to v9

Author: renovate[bot]

src/HostedServiceMetricPusher/HostedServiceMetricPusher.csproj

@@ -6,6 +6,6 @@
     <PackageReference Include="Prometheus.Client" Version="6.1.0" />
     <PackageReference Include="Prometheus.Client.DependencyInjection" Version="1.5.1" />
     <PackageReference Include="Prometheus.Client.MetricPusher.HostedService" Version="0.5.0" />
-    <PackageReference Include="Microsoft.Extensions.Hosting" Version="7.0.1" />
+    <PackageReference Include="Microsoft.Extensions.Hosting" Version="9.0.8" />
   </ItemGroup>
 </Project>

src/WorkerMetricServer/WorkerMetricServer.csproj

@@ -4,7 +4,7 @@
 
   </PropertyGroup>
   <ItemGroup>
-    <PackageReference Include="Microsoft.Extensions.Hosting" Version="6.0.1" />
+    <PackageReference Include="Microsoft.Extensions.Hosting" Version="9.0.8" />
     <PackageReference Include="Prometheus.Client.DependencyInjection" Version="1.5.1" />
     <PackageReference Include="Prometheus.Client.MetricServer" Version="7.0.0" />
   </ItemGroup>