[iOS] New FAQ-entry reg. beta versions

[loki-cui]

Where to find the issue

not communicated on coronawarn.app anymore. There used to be an entry reg. iOS 14.0 beta, but this was closed after the release of iOS 14.0

Describe the issue

When Apple released 14.2 beta 3 a lot of users could not use the app anymore and saw the error message "EN code 2"
See corona-warn-app/cwa-app-ios#1339

Suggested change

Pls. create again a FAQ entry as beta versions are officially not supported. Of course any hints regarding potential incompatibilities are welcome, but they should be addressed under https://github.com/corona-warn-app/cwa-app-ios/issues

Proposal for the FAQ-entry:

DE
Ich teste eine Beta-Version von iOS. Warum wird die Corona-Warn-App noch nicht unterstützt?
Wir unterstützen offiziell keine Beta-Versionen der jeweiligen Betriebssysteme. Diese sind noch in der Entwicklung und nicht für den produktiven Betrieb vorgesehen.
Wenn Sie als Teilnehmer am Apple Beta Software-Programm jedoch frühzeitig auf potentielle Fehler oder Inkompatibilitäten hinweisen möchten, nehmen wir Ihr Feedback gerne auf Github entgegen: https://github.com/corona-warn-app/cwa-app-ios/issues

EN
I am testing a beta version of iOS. Why is the Corona-Warn-App not yet supported?
We do not officially support beta versions of the respective operating systems. These are still in development and not intended for productive operation.
However, if you as a participant in the Apple beta software programme would like to point out potential errors or incompatibilities at an early stage, we are happy to receive your feedback on Github: https://github.com/corona-warn-app/cwa-app-ios/issues

[svengabr]

The old FAQ entry was removed a while back because it was specific for iOS 14 Beta 4. I will add a new entry without any version specific anchor link then.

{
    "title": "[Apple/iOS]: I'm testing the beta version of iOS 14. Why is Corona-Warn-App not yet supported?",
    "anchor": "ios_14_beta",
    "active": true,
    "textblock": [
        "Even though with iOS 14 Beta 4, the Exposure Notification framework is available now, the Corona-Warn-App does not support iOS 14 Beta-Versions. The Beta-Versions are <a href='https://developer.apple.com/support/beta-software/' target='_blank' rel='noopener noreferrer'>still under development</a> and are not public. See the <a href='https://developer.apple.com/documentation/ios-ipados-release-notes/ios-ipados-14-beta-release-notes' target='_blank' rel='noopener noreferrer'>iOS & iPadOS 14 Beta Release Notes</a>."
    ]
},

[svengabr]

@loki-cui I did create the new FAQ entries:

https://www.coronawarn.app/en/faq/#beta_ios
https://www.coronawarn.app/de/faq/#beta_ios