Bump the min versions to match what Firebase will do for version 12.

https://github.com/firebase/firebase-ios-sdk/blob/main/FirebaseCore/CHANGELOG.md#unreleased

Author: thomasvl

GoogleAPIClientForREST.podspec

@@ -12,16 +12,17 @@ Pod::Spec.new do |s|
       framework for accessing JSON REST APIs.  This is the recommended library
       for accessing JSON-based Google APIs for iOS, OS X, and tvOS applications.
 
-      This version can be used with iOS ≥ 10.0, OS X ≥ 10.12, tvOS ≥ 10.0, watchOS ≥ 6.0.
+      This version can be used with iOS ≥ 15.0, OS X ≥ 10.15, tvOS ≥ 15.0, visionOS ≥ 1.0,
+      watchOS ≥ 7.0.
                    DESC
 
   # Ensure developers won't hit CocoaPods/CocoaPods#11402 with the resource
   # bundle for the privacy manifest.
   s.cocoapods_version = '>= 1.12.0'
 
-  ios_deployment_target = '12.0'
+  ios_deployment_target = '15.0'
   osx_deployment_target = '10.15'
-  tvos_deployment_target = '13.0'
+  tvos_deployment_target = '15.0'
   visionos_deployment_target = '1.0'
   watchos_deployment_target = '7.0'
 
@@ -31,7 +32,7 @@ Pod::Spec.new do |s|
   s.visionos.deployment_target = visionos_deployment_target
   s.watchos.deployment_target = watchos_deployment_target
 
-  s.dependency 'GTMSessionFetcher/Full', '>= 1.6.1', '< 5.0'
+  s.dependency 'GTMSessionFetcher/Full', '>= 1.6.1', '< 6.0'
 
   s.prefix_header_file = false
 

Package.swift

@@ -1,13 +1,13 @@
-// swift-tools-version:5.3
+// swift-tools-version:5.8
 // The swift-tools-version declares the minimum version of Swift required to build this package.
 import PackageDescription
 
 let package = Package(
     name: "GoogleAPIClientForREST",
     platforms: [
-        .iOS(.v12),
+        .iOS(.v15),
         .macOS(.v10_15),
-        .tvOS(.v13),
+        .tvOS(.v15),
         .watchOS(.v7)
     ],
     products: [
@@ -1224,7 +1224,7 @@ let package = Package(
         // End of products.
     ],
     dependencies: [
-        .package(url: "https://github.com/google/gtm-session-fetcher.git", "1.6.1" ..< "5.0.0"),
+        .package(url: "https://github.com/google/gtm-session-fetcher.git", "1.6.1" ..< "6.0.0"),
     ],
     targets: [
         .target(