fix a warning and try to fix ios build

Author: klundberg

.github/workflows/ci.yml

@@ -41,7 +41,7 @@ jobs:
           set -o pipefail && xcodebuild \
            -scheme CombineCoreBluetooth \
            -workspace ./CombineCoreBluetooth.xcworkspace/ \
-           -destination "platform=iOS Simulator,OS=16.2,name=iPhone 14" \
+           -destination "platform=iOS Simulator,OS=latest,name=iPhone 14" \
            -sdk iphonesimulator \
            -enableCodeCoverage YES \
            -disableAutomaticPackageResolution \

CombineCoreBluetooth.xcodeproj/project.pbxproj

@@ -67,7 +67,6 @@
 		00CF0B77288DD73700FD88E1 /* PeripheralError.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = PeripheralError.swift; sourceTree = "<group>"; };
 		00D8C7422A69A6E20069EC00 /* PeripheralManagerError.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = PeripheralManagerError.swift; sourceTree = "<group>"; };
 		EB443F8E27C6BCA70005CCEA /* CombineCoreBluetooth.framework */ = {isa = PBXFileReference; explicitFileType = wrapper.framework; includeInIndex = 0; path = CombineCoreBluetooth.framework; sourceTree = BUILT_PRODUCTS_DIR; };
-		EB443F9927C6BDE00005CCEA /* CombineCoreBluetooth.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = CombineCoreBluetooth.h; sourceTree = "<group>"; };
 		EB443F9C27C6BDE00005CCEA /* Exports.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = Exports.swift; sourceTree = "<group>"; };
 		EB443F9E27C6BDE00005CCEA /* Publisher+Extensions.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = "Publisher+Extensions.swift"; sourceTree = "<group>"; };
 		EB443F9F27C6BDE00005CCEA /* Unimplemented.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = Unimplemented.swift; sourceTree = "<group>"; };
@@ -171,7 +170,6 @@
 		EB443F9827C6BDE00005CCEA /* Sources */ = {
 			isa = PBXGroup;
 			children = (
-				EB443F9927C6BDE00005CCEA /* CombineCoreBluetooth.h */,
 				EB443F9A27C6BDE00005CCEA /* CombineCoreBluetooth */,
 			);
 			path = Sources;

Sources/CombineCoreBluetooth.h

@@ -1,5 +1,5 @@
 import Foundation
-@preconcurrency import CoreBluetooth
+import CoreBluetooth
 
 public struct L2CAPChannel: @unchecked Sendable {
   // Need to keep a reference to this so the system doesn't close the channel