Version 1.12.0-dev.5.7

Fix error in merge of e3963b88d1a58c2823d57d5cae13bf6d6eec9e3c to
version 1.12.0-dev.5.6
diff --git a/tools/VERSION b/tools/VERSION
index c5c163e..f6c8a6b 100644
--- a/tools/VERSION
+++ b/tools/VERSION
@@ -28,4 +28,4 @@
 MINOR 12
 PATCH 0
 PRERELEASE 5
-PRERELEASE_PATCH 6
+PRERELEASE_PATCH 7
diff --git a/tools/deps/dartium.deps/DEPS b/tools/deps/dartium.deps/DEPS
index 11e4803..44cfb744 100644
--- a/tools/deps/dartium.deps/DEPS
+++ b/tools/deps/dartium.deps/DEPS
@@ -34,7 +34,7 @@
   "metatest_rev": "@e5aa8e4e19fc4188ac2f6d38368a47d8f07c3df1",
   "oauth2_rev": "@1bff41f4d54505c36f2d1a001b83b8b745c452f5",
   "observatory_pub_packages_rev": "@cdc4b3d4c15b9c0c8e7702dff127b440afbb7485",
-  "package_config_rev": "@0.1.3",
+  "package_config_tag": "@0.1.3",
   "path_rev": "@b657c0854d1cf41c014986fa9d2321f1173df805",
   "plugin_tag": "@0.1.0",
   "pool_rev": "@22e12aeb16ad0b626900dbe79e4a25391ddfb28c",