gmt 5.4.2
gmt 5.4.2

Closes #5911.

Signed-off-by: Michka Popoff <7b0496f66f66ee22a38826c310c38b415671b832@gmail.com>

andrewjpage/homebrew-science,dpo/homebrew-science,heuermh/homebrew-science,pditommaso/homebrew-science,quantumsteve/homebrew-science