www/node: Update 9.2.1 -> 9.3.0
Approved by: robak (mentor)
$ portlint -C
WARN: Makefile: possible use of absolute pathname "/etc/make.conf".
WARN: Makefile: "IGNORE" has to appear earlier.
WARN: Makefile: "ONLY_FOR_ARCHS" has to appear earlier.
0 fatal errors and 3 warnings found.