This was done to fix a problem for a package with a really long list of dependencies.
It would be nice if this kind of values are configurable via a config for future, to avoid editing the code for custom use cases.
thanks to Sorin Pop, who found and fixed the issue in our internal system :)

fix big list of dependency problems (up to 2MB)

This way `bufio.Scanner` would allocate initial buffer of default size,
buf might still grow to maximum defined size.