The pod "FirebaseAppCheck" requires a higher minimum iOS deployment version

I am building an app with Flutter, using Firebase as backend. Until yesterday, building worked fine, but now suddenly it doesn't build anymore for iOS, instead giving me this error message:

Error: The pod "FirebaseAppCheck" required by the plugin "firebase_app_check"
requires a higher minimum iOS deployment version than the plugin's reported
minimum version.
To build, remove the plugin "firebase_app_check", or contact the plugin's
developers for assistance.

Digging a bit deeper into the verbose output, I could also find this:

 [!] CocoaPods could not find compatible versions for pod "FirebaseAppCheck":
      In snapshot (Podfile.lock):
        FirebaseAppCheck (= 10.18.0, ~> 10.18.0-beta)

      In Podfile:
        firebase_app_check (from `.symlinks/plugins/firebase_app_check/ios`) was
        resolved to 0.2.1-16, which depends on
          FirebaseAppCheck (~> 10.22.0-beta)

    Specs satisfying the `FirebaseAppCheck (= 10.18.0, ~> 10.18.0-beta),
    FirebaseAppCheck (~> 10.22.0-beta)` dependency were found, but they required
    a higher minimum deployment target.

Does anyone have an idea what exactly this means and how to resolve it?

Because of the above main error message, I already tried increasing the iOS minimum deployment version but that wasn't the solution. It even gave me the error when I specified iOS 17.0

I also experimented a bit with the version requirement for the firebase_app_check plugin in my pubspec.yaml, both up- and downgrading it, but that didn't work either.

I set a minimum iOS deployment target to previous latest version in xcode and ran

1. pod install --repo-update

2. pod update Firebase/CoreOnly FirebaseAppCheck

1>which checks the dependent files 2>then updated the two packages identified in (1) together.