Fix IID version

Author: paulb777

FirebaseInstanceID.podspec

@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
   s.name             = 'FirebaseInstanceID'
-  s.version          = ''
+  s.version          = '4.4.0'
   s.summary          = 'Firebase InstanceID'
 
   s.description      = <<-DESC

Releases/Manifests/6.27.0.json

@@ -10,7 +10,7 @@
   "FirebaseFunctions" : "2.6.0",
   "FirebaseInAppMessaging" : "0.21.0",
   "FirebaseInstallations" : "1.4.0",
-  "FirebaseInstanceID" : "",
+  "FirebaseInstanceID" : "4.4.0",
   "FirebaseMessaging" : "4.5.0",
   "FirebaseRemoteConfig" : "4.6.0",
   "FirebaseStorage" : "3.7.0",