v4.9.1

What's Changed

• Bump cookie and express by @dependabot in #174
• Bump serialize-javascript and mocha by @dependabot in #173
• Bump cross-spawn from 7.0.3 to 7.0.6 by @dependabot in #172
• Bump path-to-regexp and express by @dependabot in #171
• Switch to renovatebot by @neilenns in #176
• Remove stray # from Dockerfile by @neilenns in #180

Full Changelog: v4.9.0...v4.9.1