Patch CVE-2021-44906

[dpassen]

• Bump minimist to 1.2.6

Dependency minimist is subject to CVE-2021-44906

Relevant issues

Contributor checklist

• Provide tests for the changes (unless documentation-only)
• Documented any new features, CLI switches, etc. (if applicable)
  • Server --help output
  • README.md
  • doc/http-server.1 (use the same format as other entries)
• The pull request is being made against the master branch

Maintainer checklist

• Assign a version triage tag
• Approve tests if applicable

[vlebedeff]

@thornjad how can we help to merge this faster?

[thornjad]

Hey, sorry, I've been really busy lately. I'll merge now, and make a release as soon as I can. Thank you for the dependency bump!