build(deps): bump acorn from 5.7.3 to 5.7.4
build(deps): bump acorn from 5.7.3 to 5.7.4

Bumps [acorn](https://github.com/acornjs/acorn) from 5.7.3 to 5.7.4.
- [Release notes](https://github.com/acornjs/acorn/releases)
- [Commits](https://github.com/acornjs/acorn/compare/5.7.3...5.7.4)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
hackerkid/zulip,punchagan/zulip,andersk/zulip,eeshangarg/zulip,timabbott/zulip,timabbott/zulip,shubhamdhama/zulip,eeshangarg/zulip,eeshangarg/zulip,zulip/zulip,kou/zulip,hackerkid/zulip,kou/zulip,shubhamdhama/zulip,zulip/zulip,brainwane/zulip,zulip/zulip,shubhamdhama/zulip,brainwane/zulip,brainwane/zulip,punchagan/zulip,kou/zulip,timabbott/zulip,rht/zulip,andersk/zulip,kou/zulip,shubhamdhama/zulip,shubhamdhama/zulip,rht/zulip,kou/zulip,shubhamdhama/zulip,punchagan/zulip,zulip/zulip,synicalsyntax/zulip,timabbott/zulip,zulip/zulip,punchagan/zulip,showell/zulip,andersk/zulip,kou/zulip,synicalsyntax/zulip,hackerkid/zulip,synicalsyntax/zulip,eeshangarg/zulip,rht/zulip,hackerkid/zulip,hackerkid/zulip,eeshangarg/zulip,punchagan/zulip,andersk/zulip,rht/zulip,rht/zulip,kou/zulip,showell/zulip,andersk/zulip,punchagan/zulip,andersk/zulip,zulip/zulip,shubhamdhama/zulip,synicalsyntax/zulip,rht/zulip,eeshangarg/zulip,hackerkid/zulip,synicalsyntax/zulip,showell/zulip,brainwane/zulip,andersk/zulip,eeshangarg/zulip,hackerkid/zulip,zulip/zulip,brainwane/zulip,brainwane/zulip,brainwane/zulip,showell/zulip,showell/zulip,punchagan/zulip,timabbott/zulip,showell/zulip,timabbott/zulip,rht/zulip,synicalsyntax/zulip,timabbott/zulip,synicalsyntax/zulip,showell/zulip