Upgrade to v4.2.2

[yunohost-bot]

Upgrade sources

• front v4.2.1: https://github.com/shlinkio/shlink-web-client/releases/tag/v4.2.1
• main v4.2.2: https://github.com/shlinkio/shlink/releases/tag/v4.2.2

[yunohost-bot]

May the CI gods be with you!