Upgrade required macOS version to 13.

Also upgrade necesary dependencies.

Change-Id: I814feab19cf152bef72fe2f71694d4139eaa76f7
Reviewed-on: https://chrome-internal-review.googlesource.com/c/v8/fuzzilli/+/8636576
Reviewed-by: Matthias Liedtke <[email protected]>
Commit-Queue: Danylo Mocherniuk <[email protected]>

Author: danylo1999

Package.swift

@@ -1,4 +1,4 @@
-// swift-tools-version:5.3
+// swift-tools-version:5.7
 //
 // Copyright 2019 Google LLC
 //
@@ -19,7 +19,7 @@ import PackageDescription
 let package = Package(
     name: "Fuzzilli",
     platforms: [
-        .macOS(.v11),
+        .macOS(.v13),
     ],
     products: [
         .library(name: "Fuzzilli",targets: ["Fuzzilli"]),
@@ -61,13 +61,13 @@ let package = Package(
                     .copy("Protobuf/ast.proto"),
                     .copy("Compiler/Parser")]),
 
-        .target(name: "REPRLRun",
+        .executableTarget(name: "REPRLRun",
                 dependencies: ["libreprl"]),
 
-        .target(name: "FuzzilliCli",
+        .executableTarget(name: "FuzzilliCli",
                 dependencies: ["Fuzzilli"]),
 
-        .target(name: "FuzzILTool",
+        .executableTarget(name: "FuzzILTool",
                 dependencies: ["Fuzzilli"]),
 
         .testTarget(name: "FuzzilliTests",