Use modified SwiftSerial with dtr support

Package.resolved

@@ -3,11 +3,11 @@
     "pins": [
       {
         "package": "SwiftSerial",
-        "repositoryURL": "https://github.com/yeokm1/SwiftSerial.git",
+        "repositoryURL": "https://vato.ddns.net/gitlab/vato007/SwiftSerial.git",
         "state": {
-          "branch": null,
-          "revision": "0e824cc38c6802e69543d0c1406d34babfd68e2e",
-          "version": "0.1.2"
+          "branch": "dtr_support",
+          "revision": "9799f402e77e5d69b0811b6c714b172d9ccdd768",
+          "version": null
         }
       }
     ]

Package.swift

@@ -13,7 +13,7 @@ let package = Package(
     ],
     dependencies: [
         // Dependencies declare other packages that this package depends on.
-        .package(url: "https://github.com/yeokm1/SwiftSerial.git", from: "0.1.2")
+        .package(url: "https://vato.ddns.net/gitlab/vato007/SwiftSerial.git", .branch("dtr_support"))
     ],
     targets: [
         // Targets are the basic building blocks of a package. A target can define a module or a test suite.