Bump ppy.osu.Game from 2020.1229.0 to 2021.109.0

Bumps [ppy.osu.Game](https://github.com/ppy/osu) from 2020.1229.0 to 2021.109.0.
- [Release notes](https://github.com/ppy/osu/releases)
- [Commits](ppy/osu@2020.1229.0...2021.109.0)

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

Author: dependabot-preview[bot]

osu.Game.Rulesets.Rush/osu.Game.Rulesets.Rush.csproj

@@ -10,6 +10,6 @@
     <EmbeddedResource Include="Resources\**" />
   </ItemGroup>
   <ItemGroup>
-    <PackageReference Include="ppy.osu.Game" Version="2020.1229.0" />
+    <PackageReference Include="ppy.osu.Game" Version="2021.109.0" />
   </ItemGroup>
 </Project>