update xcodeproj

Package.resolved

@@ -68,9 +68,9 @@
         "package": "xcodeproj",
         "repositoryURL": "https://github.com/tuist/xcodeproj.git",
         "state": {
-          "branch": "master",
-          "revision": "7a32fa0ebf0c6120ed8a7de03a632c2a10bbe243",
-          "version": null
+          "branch": null,
+          "revision": "869ae3f417b0fb545e454ead36e2e13f157265a2",
+          "version": "6.2.0"
         }
       },
       {

Package.swift

@@ -16,7 +16,7 @@ let package = Package(
         .package(url: "https://github.com/yonaskolb/JSONUtilities.git", from: "4.0.0"),
         .package(url: "https://github.com/kylef/Spectre.git", from: "0.9.0"),
         .package(url: "https://github.com/onevcat/Rainbow.git", from: "3.0.0"),
-        .package(url: "https://github.com/tuist/xcodeproj.git", .branch("master")),
+        .package(url: "https://github.com/tuist/xcodeproj.git", from: "6.2.0"),
     ],
     targets: [
         .target(name: "XcodeGen", dependencies: [