chore(deps): update dependency morelinq to v4

Author: renovate[bot]

src/2020/AdventOfCode.2020.Puzzles/AdventOfCode.2020.Puzzles.csproj

@@ -10,7 +10,7 @@
   </ItemGroup>
 
   <ItemGroup Label="Package References">
-    <PackageReference Include="morelinq" Version="3.3.2" />
+    <PackageReference Include="morelinq" Version="4.4.0" />
   </ItemGroup>
 
   <ItemGroup>