chore: Update platform target to iOS 13 (#165)

* chore: Update platform target to iOS 13

* chore: added podfile SDK version support

Author: waynewbishop

tutorials/current-place-on-map/Podfile

@@ -1,6 +1,6 @@
 source 'https://github.com/CocoaPods/Specs.git'
 target 'current-place-on-map' do
-  platform :ios, '12.0'
-  pod 'GooglePlaces'
-  pod 'GoogleMaps'
+  platform :ios, '13.0'
+  pod 'GoogleMaps', '7.3.0'
+  pod 'GooglePlaces', '7.3.0'
 end

tutorials/map-with-marker/Podfile

@@ -1,5 +1,5 @@
 source 'https://github.com/CocoaPods/Specs.git'
 target 'map-with-marker' do
-  platform :ios, '12.0'
-  pod 'GoogleMaps'
+  platform :ios, '13.0'
+  pod 'GoogleMaps', '7.3.0'
 end

tutorials/places-address-form/Podfile

@@ -1,4 +1,5 @@
 source 'https://github.com/CocoaPods/Specs.git'
-  target 'places-address-form' do
-  pod 'GooglePlaces'
+target 'places-address-form' do
+  platform :ios, '13.0'
+  pod 'GooglePlaces', '7.3.0'
 end