[BITAU-194] Fix issue with unit tests failing occasionally

BitwardenShared/Core/Platform/Services/AuthenticatorSyncService.swift

@@ -62,6 +62,12 @@ actor DefaultAuthenticatorSyncService: NSObject, AuthenticatorSyncService {
     /// The service used by the application to manage account state.
     private let stateService: StateService
 
+    /// A Task to hold the subscription that waits for sync to be turned on/off.
+    private var syncSubscriber: Task<Void, Never>?
+
+    /// A Task to hold the subscription that waits for the vault to be locked/unlocked..
+    private var vaultSubscriber: Task<Void, Never>?
+
     /// The service used by the application to manage vault access.
     private let vaultTimeoutService: VaultTimeoutService
 
@@ -107,6 +113,11 @@ actor DefaultAuthenticatorSyncService: NSObject, AuthenticatorSyncService {
         super.init()
     }
 
+    deinit {
+        syncSubscriber?.cancel()
+        vaultSubscriber?.cancel()
+    }
+
     // MARK: Public Methods
 
     public func getTemporaryTotpItem() async -> AuthenticatorBridgeItemDataView? {
@@ -130,7 +141,7 @@ actor DefaultAuthenticatorSyncService: NSObject, AuthenticatorSyncService {
             return
         }
 
-        Task {
+        syncSubscriber = Task {
             for await (userId, _) in await self.stateService.syncToAuthenticatorPublisher().values {
                 guard let userId else { continue }
 
@@ -141,7 +152,7 @@ actor DefaultAuthenticatorSyncService: NSObject, AuthenticatorSyncService {
                 }
             }
         }
-        Task {
+        vaultSubscriber = Task {
             for await vaultStatus in await self.vaultTimeoutService.vaultLockStatusPublisher().values {
                 guard let vaultStatus else { continue }