Use trackCacheDependencies for performance speedup

pubspec.lock

Index: pubspec.lock
diff --git a/pubspec.lock b/pubspec.lock
index f06f875ba4c42b27df4a59e3b3315d090a4d7fc7..cde66b17c4a2dac349878eb8b3b2eae4ebe4d704 100644
--- a/pubspec.lock
+++ b/pubspec.lock
@@ -6,7 +6,7 @@ packages:
       name: analyzer
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.27.4-alpha.7"
+    version: "0.27.4-alpha.11"
   args:
     description:
       name: args
@@ -66,7 +66,7 @@ packages:
       name: crypto
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.9.2+1"
+    version: "2.0.1"
   csslib:
     description:
       name: csslib
@@ -144,7 +144,7 @@ packages:
       name: package_config
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.1.3"
+    version: "0.1.5"
   path:
     description:
       name: path
@@ -264,13 +264,13 @@ packages:
       name: web_socket_channel
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.0.3"
+    version: "1.0.4"
   webdriver:
     description:
       name: webdriver
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.8.8"
+    version: "1.1.1"
   when:
     description:
       name: when