www/gitlab: Update RUN_DEPENDS
- Change RUN_DEPENDS from rubygem-browser to rubygem-browser5
- Change RUN_DEPENDS from rubygem-grape-swagger to rubygem-grape-swagger20
- Change RUN_DEPENDS from rubygem-httparty to rubygem-httparty021
- Change RUN_DEPENDS from rubygem-semver_dialects to rubygem-semver_dialects2
- Bump PORTREVISION for dependency change