Align platform requirements with SVGKit

Author: DwayneCoussement

Package.swift

@@ -1,11 +1,11 @@
-// swift-tools-version:5.0
+// swift-tools-version:5.1
 // The swift-tools-version declares the minimum version of Swift required to build this package.
 import PackageDescription
 
 let package = Package(
     name: "SDWebImageSVGKitPlugin",
     platforms: [
-        .macOS(.v10_11), .iOS(.v9), .tvOS(.v9), .watchOS(.v2)
+        .macOS(.v10_11), .iOS(.v13), .tvOS(.v13)
     ],
     products: [
         // Products define the executables and libraries produced by a package, and make them visible to other packages.
@@ -30,4 +30,4 @@ let package = Package(
             publicHeadersPath: "SDWebImageSVGKitPlugin/Classes"
         )
     ]
-)
+)