1.21.1

⚠️ Warning: Maintenance feature is broken in 1.21.0 and 1.21.1.

🆕 New Features

• #2956 New notification provider: Opsgenie (Thanks @wwniclask25)
• #2980 New notification provider: Twilio Sms (Thanks @Genc)

🐛 Bug Fixes

• #2970 MySQL monitor crash issue
• #2969 A cloned push type monitor that do not generate a new push token
• #2958 The copy text button is not working in the API key dialog
• #2906 Fix: Check for TLS expiry notified days smaller than target (Thanks @chakflying)
• #2975 Fix: Allow status badge with empty label (Thanks @chakflying)
• #2973 Fix rounding issue in badges (Thanks @chakflying)

💇‍♀️ Improvements

• #2878 Show a refresh countdown in the bottom of status pages (Thanks @chakflying)
• #2908 Ability to set the ssl key passphrase (Thanks @chakflying)
• Update SQLite to v3.41.1

🦎 Translation Contributors

• #2978 (Thanks @401U @AmadeusGraves @DoyunShin @Mirinek @PetoFeFe @cyril59310 @exituser @ilya12077 @tahaipek)

Others

• Other small changes, code refactoring and helps:
  @GrantBirki
  (Let me know if your name is missing. If your pull request have been merged in this version)