Update to Firebase 11.15.0

[github-actions]

What's Changed

• [Auth] Re-add import Foundation in SecureTokenService.swift by @andrewheard in [Auth] Re-add import Foundation in SecureTokenService.swift firebase/firebase-ios-sdk#14920
• Skip test due to being a bad test by @dmaclach in Skip test due to being a bad test firebase/firebase-ios-sdk#14923
• Refactored Number Coding in FunctionsSerializer by @yakovmanshin in Refactored Number Coding in FunctionsSerializer firebase/firebase-ios-sdk#14889
• [Infra] Migrate firestore.yml to use reusable workflow jobs by @ncooke3 in [Infra] Migrate firestore.yml to use reusable workflow jobs firebase/firebase-ios-sdk#14917
• [Release] Carthage updates for M165 / 11.14.0 by @andrewheard in [Release] Carthage updates for M165 / 11.14.0 firebase/firebase-ios-sdk#14927
• [Firebase AI] Add Firebase AI Logic SDK to Carthage docs by @andrewheard in [Firebase AI] Add Firebase AI Logic SDK to Carthage docs firebase/firebase-ios-sdk#14928
• [Release] Update versions for 11.15.0 by @andrewheard in [Release] Update versions for 11.15.0 firebase/firebase-ios-sdk#14930
• [Firebase AI] Add code snippets for countTokens by @andrewheard in [Firebase AI] Add code snippets for countTokens firebase/firebase-ios-sdk#14940
• [Auth] NFC - AuthRecaptchaVerifier.swift by @ncooke3 in [Auth] NFC - AuthRecaptchaVerifier.swift firebase/firebase-ios-sdk#14938
• Rename VertexAITestApp to FirebaseAITestApp by @paulb777 in Rename VertexAITestApp to FirebaseAITestApp firebase/firebase-ios-sdk#14943
• [Firebase AI] Make GenerativeAIRequest.Response Sendable by @andrewheard in [Firebase AI] Make GenerativeAIRequest.Response Sendable firebase/firebase-ios-sdk#14947
• [Sessions] Fix Sendability warnings by @ncooke3 in [Sessions] Fix Sendability warnings firebase/firebase-ios-sdk#14952
• [Firebase AI] Upgrade Gemini 1.x models in integration tests by @andrewheard in [Firebase AI] Upgrade Gemini 1.x models in integration tests  firebase/firebase-ios-sdk#14956
• Add AI Logic product to FEATURE_REQUEST.yml by @paulb777 in Add AI Logic product to FEATURE_REQUEST.yml firebase/firebase-ios-sdk#14969
• docs: fix auxiliary in firebaseFunctions sources by @MojtabaHs in docs: fix auxiliary in firebaseFunctions sources firebase/firebase-ios-sdk#14964
• docs: fix NSDictionary in firebaseFunctions internal sources by @MojtabaHs in docs: fix NSDictionary in firebaseFunctions internal sources firebase/firebase-ios-sdk#14965
• fix: a typo in CanScheduleOperationsWithRespectsToShutdownState by @MojtabaHs in fix: a typo in CanScheduleOperationsWithRespectsToShutdownState firebase/firebase-ios-sdk#14966
• [Infra] Remove C99 language standard settings by @ncooke3 in [Infra] Remove C99 language standard settings firebase/firebase-ios-sdk#14970
• Add title parameter to all static functions in Schema class by @SeanChinJunKai in Add title parameter to all static functions in Schema class firebase/firebase-ios-sdk#14971
• [Firebase AI] Fix JSON formatting issue in Schema unit tests by @andrewheard in [Firebase AI] Fix JSON formatting issue in Schema unit tests firebase/firebase-ios-sdk#14980
• [Firebase AI] Add support for configuring a thinking budget by @andrewheard in [Firebase AI] Add support for configuring a thinking budget firebase/firebase-ios-sdk#14909
• [Firebase AI] Add integration tests for global endpoint by @andrewheard in [Firebase AI] Add integration tests for global endpoint firebase/firebase-ios-sdk#14991
• [Auth] Address Xcode 26 warnings in Auth by @ncooke3 in [Auth] Address Xcode 26 warnings in Auth firebase/firebase-ios-sdk#14996
• [Firebase AI] Deprecate CountTokensResponse.totalBillableCharacters by @andrewheard in [Firebase AI] Deprecate CountTokensResponse.totalBillableCharacters firebase/firebase-ios-sdk#14998
• [Infra] Remove Firebase Dynamic Links from the InAppMessaging sample applications. by @ncooke3 in [Infra] Remove Firebase Dynamic Links from the InAppMessaging sample applications. firebase/firebase-ios-sdk#15000
• [Core] Deprecate '-[FIROptions deepLinkURLScheme]' API by @ncooke3 in [Core] Deprecate '-[FIROptions deepLinkURLScheme]' API firebase/firebase-ios-sdk#15001
• [Core] Remove testing usage of Options.deepLinkURLScheme by @ncooke3 in [Core] Remove testing usage of Options.deepLinkURLScheme firebase/firebase-ios-sdk#15004

New Contributors

• @dmaclach made their first contribution in Skip test due to being a bad test firebase/firebase-ios-sdk#14923
• @SeanChinJunKai made their first contribution in Add title parameter to all static functions in Schema class firebase/firebase-ios-sdk#14971

Full Changelog: firebase/firebase-ios-sdk@11.14.0...11.15.0