build(ios): bump minimum platform to iOS 15.1

Author: fadi-george

examples/demo/bun.lock

@@ -2349,7 +2349,7 @@ SPEC CHECKSUMS:
   React-logger: 9e51e01455f15cb3ef87a09a1ec773cdb22d56c1
   React-Mapbuffer: 92b99e450e8ff598b27d6e4db3a75e04fd45e9a9
   React-microtasksnativemodule: 2fe0f2bd2840dedbd66c0ac249c64f977f39cc18
-  react-native-onesignal: 6f530ad3cac113ad36491dddc455fec600776158
+  react-native-onesignal: eb0b07478feb04abfc7a2504d34fec0df6317140
   react-native-safe-area-context: 37e680fc4cace3c0030ee46e8987d24f5d3bdab2
   React-NativeModulesApple: 44a9474594566cd03659f92e38f42599c6b9dee4
   React-networking: db73d91466cb134fcbdaaa579fb2de14e2c2ea01

examples/demo/ios/Podfile.lock

@@ -8,7 +8,7 @@ Pod::Spec.new do |s|
   s.homepage       = "https://github.com/OneSignal/react-native-onesignal"
   s.license        = package_json["license"]
   s.author         = { package_json["author"] => package_json["author"] }
-  s.platform       = :ios, "11.0"
+  s.platform       = :ios, "15.1"
   s.source         = { :git => "#{package_json["repository"]["url"]}.git", :tag => "#{s.version}" }
   s.source_files   = 'ios/RCTOneSignal/*.{h,m,mm}'
   s.static_framework = true