Release v1.6.8

Release notes:

Bug Fixes

• AxiosHeaders: fix AxiosHeaders conversion to an object during config merging (#6243) (2656612)
• import: use named export for EventEmitter; (7320430)
• vulnerability: update follow-redirects to 1.15.6 (#6300) (8786e0f)

Contributors to this release

• Jay
• Dmitriy Mozgovoy
• Mitchell
• Emmanuel
• Lucas Keller
• Aditya Mogili
• Miroslav Petrov