overlay: Downgrade the biometrics security to WEAK

FP3 biometrics testing under new Android 12/13 protocols only grants
"BIOMETRIC_WEAK" (class 2), not strong biometrics security level
anymore.

Issue: FP3-A13#39
Change-Id: Ibae8922419a95a8ef53b2e65da619452f5dd3ed7
1 file changed