gmt: bump revision (glib 2.74.0)
gmt: bump revision (glib 2.74.0)

This is needed to make sure this links properly with PCRE2 instead of
PCRE.

adam-moss/homebrew-core,stgraber/homebrew-core,chrisfinazzo/homebrew-core,filcab/homebrew-core,adam-moss/homebrew-core,stgraber/homebrew-core,sjackman/homebrew-core,lemzwerg/homebrew-core,sjackman/homebrew-core,Homebrew/homebrew-core,nandub/homebrew-core,filcab/homebrew-core,makigumo/homebrew-core,nandub/homebrew-core,makigumo/homebrew-core,chrisfinazzo/homebrew-core,Homebrew/homebrew-core,lemzwerg/homebrew-core