Bump QRCoder from 1.4.3 to 1.6.0

Bumps [QRCoder](https://github.com/codebude/QRCoder) from 1.4.3 to 1.6.0.
- [Release notes](https://github.com/codebude/QRCoder/releases)
- [Commits](https://github.com/codebude/QRCoder/compare/v1.4.3...v1.6.0)

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

Signed-off-by: dependabot[bot] <support@github.com>

DepotDownloader/DepotDownloader.csproj

@@ -14,7 +14,7 @@
 
   <ItemGroup>
     <PackageReference Include="protobuf-net" Version="3.2.30" />
-    <PackageReference Include="QRCoder" Version="1.4.3" />
+    <PackageReference Include="QRCoder" Version="1.6.0" />
     <PackageReference Include="SteamKit2" Version="3.0.0-Alpha.1" />
   </ItemGroup>
 </Project>