More Xcode 15 CI

[paulb777]

Add Xcode 15.0.1 to CI for abtesting, analytics, appdistribution, auth, core, core_extension, core_internal, crashlytics, database, dynamiclinks, app_check, and firestore.

• Fixed a few warning issues in test code.
• Consolidated pod database unit testing with pod lib lint instead of pod gen

#no-changelog

[google-oss-bot]

Coverage Report ¹

Affected Products

• FirebaseAuth-iOS-FirebaseAuth.framework

  Overall coverage changed from 68.54% (6673e7c) to 67.99% (a16a396) by -0.55%.

  Filename	Base (6673e7c)	Merge (a16a396)	Diff
  FIRAuth.m	83.68%	82.65%	-1.03%
  FIRAuthKeychainServices.m	59.66%	52.36%	-7.30%
  FIRAuthStoredUserManager.m	52.87%	17.24%	-35.63%

• FirebaseDatabase-iOS-FirebaseDatabase.framework

  Overall coverage changed from 56.97% (6673e7c) to 56.83% (a16a396) by -0.14%.

  Filename	Base (6673e7c)	Merge (a16a396)	Diff
  FSRWebSocket.m	40.13%	38.29%	-1.85%

• FirebaseDynamicLinks-iOS-FirebaseDynamicLinks.framework

  Overall coverage changed from 61.52% (6673e7c) to 77.35% (a16a396) by +15.84%.

  Filename	Base (6673e7c)	Merge (a16a396)	Diff
  FDLDeviceHeuristicsHelper.m	0.00%	100.00%	+100.00%
  FDLUtilities.m	75.40%	97.62%	+22.22%
  FIRDLDefaultRetrievalProcessV2.m	14.04%	74.27%	+60.23%
  FIRDLJavaScriptExecutor.m	24.81%	82.95%	+58.14%
  FIRDynamicLink.m	74.07%	75.93%	+1.85%
  FIRDynamicLinkNetworking.m	45.09%	81.29%	+36.20%

• FirebaseFirestore-iOS-FirebaseFirestoreInternal.framework

  Overall coverage changed from 88.10% (6673e7c) to 88.08% (a16a396) by -0.02%.

  Filename	Base (6673e7c)	Merge (a16a396)	Diff
  leveldb_remote_document_cache.cc	96.55%	94.83%	-1.72%
  ordered_code.cc	94.39%	93.90%	-0.49%

Test Logs

• Base (6673e7c): https://github.com/firebase/firebase-ios-sdk/actions/runs/6724584089
• Merge (a16a396): https://github.com/firebase/firebase-ios-sdk/actions/runs/6733897993

1. https://storage.googleapis.com/firebase-sdk-metric-reports/S4i7mamQUQ.html