feat: Update default dependencies to meet React Native 0.64 requirements

BREAKING CHANGE: The default dependencies used are now Xcode 12, CocoaPods 1.10.1, Node.js 12

src/commands/setup_macos_executor.yml

@@ -4,7 +4,7 @@ parameters:
   node_version:
     description: The version of Node to use. This can be either a major version ("8"), a major and minor ("8.4"), or a fully qualified version ("8.4.1").
     type: string
-    default: "10"
+    default: "12"
 
 steps:
   - run:

src/examples/full.yml

@@ -12,7 +12,7 @@ usage:
     checkout_code:
       executor: 
         name: rn/linux_js
-        node_version: '10'
+        node_version: '12'
       steps:
         - checkout
         - persist_to_workspace:
@@ -89,7 +89,7 @@ usage:
         # Build the iOS app in release mode and do not run tests
         - rn/ios_build:
             name: build_ios_release
-            node_version: '10'
+            node_version: '12'
             project_path: ios/Example.xcodeproj
             device: "iPhone X"
             build_configuration: Release
@@ -99,7 +99,7 @@ usage:
 
         # Build and test the iOS app in release mode
         - rn/ios_build_and_test:
-            node_version: '10'
+            node_version: '12'
             project_path: "ios/Example.xcodeproj"
             device: "iPhone X"
             build_configuration: "Release"

src/executors/linux_js.yml

@@ -2,7 +2,7 @@ parameters:
   node_version:
     description: The version of Node to use. This can be either a major version ("8"), a major and minor ("8.4"), or a fully qualified version ("8.4.1").
     type: string
-    default: '10'
+    default: '12'
   resource_class:
     description: Changes the resource class of the executor. Requires a support request to enable the resource_class parameter. See https://circleci.com/docs/2.0/configuration-reference/#resource_class
     type: string

src/executors/macos.yml

@@ -2,7 +2,7 @@ parameters:
   xcode_version:
     description: The version of Xcode to use. See here for the list of supported versions https://circleci.com/docs/2.0/testing-ios/#supported-xcode-versions
     type: string
-    default: '11.0.0'
+    default: "12.4.0"
   resource_class:
     description: Changes the resource class of the executor. Requires a support request to enable the resource_class parameter. See https://circleci.com/docs/2.0/configuration-reference/#resource_class
     type: string

src/jobs/android_test.yml

@@ -55,7 +55,7 @@ parameters:
   node_version:
     description: The version of Node to use. This can be either a major version ("8"), a major and minor ("8.4"), or a fully qualified version ("8.4.1").
     type: string
-    default: '10'
+    default: '12'
 
 steps:
   - attach_workspace:

src/jobs/ios_build.yml

@@ -52,7 +52,7 @@ parameters:
   node_version:
     description: The version of Node to use. This can be either a major version ("8"), a major and minor ("8.4"), or a fully qualified version ("8.4.1").
     type: string
-    default: '10'
+    default: '12'
 
 steps:
   - when:

src/jobs/ios_build_and_test.yml

@@ -70,7 +70,7 @@ parameters:
   node_version:
     description: The version of Node to use. This can be either a major version ("8"), a major and minor ("8.4"), or a fully qualified version ("8.4.1").
     type: string
-    default: "10"
+    default: "12"
 
 steps:
   - when: