Bump YamlDotNet from 4.3.1 to 5.0.0 in /UnityProjectBrowser

Bumps [YamlDotNet](https://github.com/aaubry/YamlDotNet) from 4.3.1 to 5.0.0.
- [Release notes](https://github.com/aaubry/YamlDotNet/releases)
- [Changelog](https://github.com/aaubry/YamlDotNet/blob/master/RELEASE_NOTES.md)
- [Commits](aaubry/YamlDotNet@v4.3.1...v5.0.0)

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

Author: dependabot[bot]

UnityProjectBrowser/packages.config

@@ -1,4 +1,4 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="YamlDotNet" version="4.3.1" targetFramework="net461" />
+  <package id="YamlDotNet" version="5.0.0" targetFramework="net461" />
 </packages>