Bump Microsoft.Extensions.Hosting from 6.0.1 to 7.0.1 (#173)

Bumps [Microsoft.Extensions.Hosting](https://github.com/dotnet/runtime) from 6.0.1 to 7.0.1.
- [Release notes](https://github.com/dotnet/runtime/releases)
- [Commits](dotnet/runtime@v6.0.1...v7.0.1)

---
updated-dependencies:
- dependency-name: Microsoft.Extensions.Hosting
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

sample/SendMailTestApp/SendMailTestApp.csproj

@@ -14,7 +14,7 @@
     </ItemGroup>
 
     <ItemGroup>
-      <PackageReference Include="Microsoft.Extensions.Hosting" Version="6.0.1" />
+      <PackageReference Include="Microsoft.Extensions.Hosting" Version="7.0.1" />
     </ItemGroup>
 
     <ItemGroup>