www/gohugo: update to 0.134.3

ChangeLog: https://github.com/gohugoio/hugo/releases/tag/v0.134.3

• tpl: Remove RSS deprecation site.Author check
• modules: Improve console output on hugo mod init
• commands: Ignore "module does not exist" errors in hugo mod init
• Add exclusion for helix .bck files
• hugolib: Move hugolib/site_new.go into hugolib/site.go
• libsass: Resolve directory paths to directory index files
• dartsass: Resolve directory paths to directory index files
• internal/warpc: Improve the JS plugin API