bump RxSwift and Swift version

Author: DivineDominion

Cartfile.resolved

@@ -1 +1 @@
-github "ReactiveX/RxSwift" "6.5.0"
+github "ReactiveX/RxSwift" "6.8.0"

Package.resolved

@@ -1,16 +1,16 @@
-// swift-tools-version:5.0
+// swift-tools-version: 5.7
 import PackageDescription
 
 let package = Package(
     name: "RxFileMonitor",
     platforms: [
-        .macOS(.v10_11),
+        .macOS(.v10_13),
     ],
     products: [
         .library(name: "RxFileMonitor", targets: ["RxFileMonitor"]),
     ],
     dependencies: [
-        .package(url: "https://github.com/ReactiveX/RxSwift", from: "5.0.0"),
+        .package(url: "https://github.com/ReactiveX/RxSwift", from: "6.8.0"),
     ],
     targets: [
         .target(
@@ -20,4 +20,4 @@ let package = Package(
             exclude: ["Info.plist"]
         )
     ]
-)
+)