Update CODEOWNERS

.github/CODEOWNERS

@@ -6,6 +6,7 @@
 /.config/                       @aspnet/build
 /build/                         @aspnet/build
 /eng/                           @aspnet/build
+/eng/common/                    @dotnet-maestro-bot
 /eng/Versions.props             @dotnet-maestro-bot @dougbu
 /eng/Version.Details.xml        @dotnet-maestro-bot @dougbu
 /src/Components/                @SteveSandersonMS