Revert "Downgrade dependency injection version"

This reverts commit d48b4df.

Author: Jack251970

Flow.Launcher/Flow.Launcher.csproj

@@ -91,9 +91,8 @@
     </PackageReference>
     <PackageReference Include="InputSimulator" Version="1.0.4" />
     <!-- Do not upgrade Microsoft.Extensions.DependencyInjection and Microsoft.Extensions.Hosting since we are .Net7.0 -->
-    <!-- TaskScheduler seems to be incompatible with 7.0.x version, so we use 6.0.x -->
-    <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="6.0.2" />
-    <PackageReference Include="Microsoft.Extensions.Hosting" Version="6.0.2" />
+    <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="7.0.0" />
+    <PackageReference Include="Microsoft.Extensions.Hosting" Version="7.0.0" />
     <PackageReference Include="Microsoft.Toolkit.Uwp.Notifications" Version="7.1.3" />
     <PackageReference Include="Microsoft.Windows.CsWin32" Version="0.3.106">
       <PrivateAssets>all</PrivateAssets>