Bump LiteDB from 5.0.9 to 5.0.15

Bumps [LiteDB](https://github.com/mbdavid/LiteDB) from 5.0.9 to 5.0.15.
- [Release notes](https://github.com/mbdavid/LiteDB/releases)
- [Commits](https://github.com/mbdavid/LiteDB/compare/v5.0.9...v5.0.15)

---
updated-dependencies:
- dependency-name: LiteDB
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Discord Media Loader.Application/packages.config

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="LiteDB" version="5.0.9" targetFramework="net461" />
+  <package id="LiteDB" version="5.0.15" targetFramework="net461" />
   <package id="Microsoft.Bcl.AsyncInterfaces" version="6.0.0" targetFramework="net461" />
   <package id="Microsoft.NETCore.Platforms" version="5.0.1" targetFramework="net461" />
   <package id="Microsoft.Win32.Primitives" version="4.3.0" targetFramework="net461" />