Upgrade packages to pull in fixed package:yaml version

Review URL: https://codereview.chromium.org/2544313003 .

Author: mkustermann

app/pubspec.lock

@@ -24,19 +24,19 @@ packages:
       name: args
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.13.5"
+    version: "0.13.7"
   async:
     description:
       name: async
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.11.1"
+    version: "1.11.3"
   charcode:
     description:
       name: charcode
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.1.0"
+    version: "1.1.1"
   collection:
     description:
       name: collection
@@ -60,7 +60,7 @@ packages:
       name: csslib
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.13.2"
+    version: "0.13.2+2"
   fixnum:
     description:
       name: fixnum
@@ -114,7 +114,7 @@ packages:
       name: http_parser
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "3.0.2"
+    version: "3.0.3"
   http_server:
     description:
       name: http_server
@@ -156,7 +156,7 @@ packages:
       name: meta
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.0.3"
+    version: "1.0.4"
   mime:
     description:
       name: mime
@@ -168,7 +168,7 @@ packages:
       name: mustache
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.2.5"
+    version: "0.2.5+1"
   package_config:
     description:
       name: package_config
@@ -180,7 +180,7 @@ packages:
       name: path
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.3.9"
+    version: "1.4.0"
   plugin:
     description:
       name: plugin
@@ -198,7 +198,7 @@ packages:
       name: pub_semver
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.3.0"
+    version: "1.3.2"
   pub_server:
     description:
       name: pub_server
@@ -210,19 +210,19 @@ packages:
       name: shelf
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.6.5+3"
+    version: "0.6.7+1"
   source_span:
     description:
       name: source_span
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.2.3"
+    version: "1.3.0"
   stack_trace:
     description:
       name: stack_trace
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.6.6"
+    version: "1.7.0"
   stream_channel:
     description:
       name: stream_channel
@@ -234,7 +234,7 @@ packages:
       name: string_scanner
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.0.0"
+    version: "1.0.1"
   typed_data:
     description:
       name: typed_data
@@ -270,6 +270,6 @@ packages:
       name: yaml
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.1.10"
+    version: "2.1.12"
 sdks:
-  dart: ">=1.17.0-dev.6.2 <2.0.0"
+  dart: ">=1.19.0 <2.0.0"