Add Swift 6 Support

Sources/FelinePine/Logger.swift

@@ -31,10 +31,12 @@
 
 #if canImport(os)
   import os.log
+
   /// Standard os.log Logger
   public typealias Logger = os.Logger
 #else
   import Logging
+
   /// swift-log Logging.Logger
   public typealias Logger = Logging.Logger
 #endif

Sources/FelinePine/LoggingSystem.swift

@@ -68,13 +68,13 @@
 // swiftlint:enable strict_fileprivate
 
 /// Defines the logging categories for your application.
-public protocol LoggingSystem {
+public protocol LoggingSystem: Sendable {
   /// Logging categories available to types in the application
   associatedtype Category: Hashable & RawRepresentable
     where Category.RawValue == String
 
   // swiftlint:disable:next missing_docs
   static var identifier: String { get }
 
   /// Subsystem to use for each ``Logger``.
   /// By default, this is `Bundle.main.bundleIdentifier`.