Release zinc-gerbil-4

@ovh-ux/manager-web# 15.2.1 (2020-08-21)

Bug Fixes

• web: contacts management redirection urls (#3481) (4f73c2b)
• web.domain: handle unavailable capabilities (#3483) (910bb9c)

@ovh-ux/manager-product-offers# 3.1.2 (2020-08-21)

Bug Fixes

• product.offers: set timeout to fix stepper index incrementation (#3480) (6f68caa)