Make some classes final

Author: danielepantaleone

Sources/BlueConnect/Common/Registry.swift

@@ -177,8 +177,8 @@ final class SubscriptionBox<ValueType>: @unchecked Sendable {
 /// to be invoked if it is not notified within the specified timeout.
 ///
 /// - Note: `KeyType` must conform to `Hashable`.
-class KeyedRegistry<KeyType, ValueType> where KeyType: Hashable {
-    
+final class KeyedRegistry<KeyType, ValueType> where KeyType: Hashable {
+
     // MARK: - Properties
 
     /// A dictionary that stores subscriptions grouped by a unique key.
@@ -291,7 +291,7 @@ class KeyedRegistry<KeyType, ValueType> where KeyType: Hashable {
 /// `ListRegistry` allows you to register subscriptions, notify them with a result, and retrieve
 /// all active subscriptions. Each subscription includes a callback and an optional timeout
 /// with a handler that is invoked if the subscription is not notified within the specified time.
-class ListRegistry<ValueType> {
+final class ListRegistry<ValueType> {
 
     // MARK: - Properties
 

Tests/BlueConnectTests/DispatchTimeIntervalExtensionsTests.swift

@@ -36,7 +36,7 @@ import XCTest
 
 @testable import BlueConnect
 
-class DispatchTimeIntervalExtensionsTests: XCTestCase {
+final class DispatchTimeIntervalExtensionsTests: XCTestCase {
 
     func testSecondsAdd() {
         let x: DispatchTimeInterval = .seconds(4)