Bump FluentFTP from 39.3.0 to 39.4.0 (#9805)

Bumps [FluentFTP](https://github.com/robinrodricks/FluentFTP) from 39.3.0 to 39.4.0.
- [Release notes](https://github.com/robinrodricks/FluentFTP/releases)
- [Changelog](https://github.com/robinrodricks/FluentFTP/blob/master/RELEASES.md)
- [Commits](https://github.com/robinrodricks/FluentFTP/commits)

---
updated-dependencies:
- dependency-name: FluentFTP
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

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

Author: dependabot[bot]

src/Files.Uwp.Storage/Files.Uwp.Storage.csproj

@@ -128,7 +128,7 @@
   </ItemGroup>
   <ItemGroup>
     <PackageReference Include="FluentFTP">
-      <Version>39.3.0</Version>
+      <Version>39.4.0</Version>
     </PackageReference>
     <PackageReference Include="Microsoft.NETCore.UniversalWindowsPlatform">
       <Version>6.2.13</Version>

src/Files.Uwp/Files.Uwp.csproj

@@ -1529,7 +1529,7 @@
       <Version>8.0.0</Version>
     </PackageReference>
     <PackageReference Include="FluentFTP">
-      <Version>39.3.0</Version>
+      <Version>39.4.0</Version>
     </PackageReference>
     <PackageReference Include="ini-parser-netstandard">
       <Version>2.5.2</Version>