Upgrade Closure Rules to v0.2.5

This CL fixes an issue preventing App Engine deploys in the open source
world, because an old version of Soy had its Maven jars compiled for Java
1.8. Upgrading to the latest Closure Rules release fixes this.

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=128841077

WORKSPACE

@@ -4,10 +4,11 @@ load("//java/google/registry:repositories.bzl", "domain_registry_repositories")
 
 domain_registry_repositories()
 
-git_repository(
+http_archive(
     name = "io_bazel_rules_closure",
-    remote = "https://github.com/bazelbuild/rules_closure.git",
-    tag = "0.2.3",
+    sha256 = "8c8a0f7f1327178bc8654e658cb6fff1171936e3033c5e263d513a7901a75b31",
+    strip_prefix = "rules_closure-0.2.5",
+    url = "http://bazel-mirror.storage.googleapis.com/github.com/bazelbuild/rules_closure/archive/0.2.5.tar.gz",
 )
 
 load("@io_bazel_rules_closure//closure:defs.bzl", "closure_repositories")
@@ -16,6 +17,7 @@ closure_repositories(
     omit_gson = True,
     omit_guava = True,
     omit_icu4j = True,
+    omit_json = True,
     omit_jsr305 = True,
     omit_jsr330_inject = True,
     omit_protobuf_java = True,

java/google/registry/repositories.bzl

@@ -274,8 +274,8 @@ def domain_registry_repositories():
 
   native.maven_jar(
       name = "gson",
-      artifact = "com.google.code.gson:gson:2.4",
-      sha1 = "0695b63d702f505b9b916e02272e3b6381bade7f",
+      artifact = "com.google.code.gson:gson:2.7",
+      sha1 = "751f548c85fa49f330cecbb1875893f971b33c4e",
   )
 
   native.maven_jar(
@@ -304,8 +304,8 @@ def domain_registry_repositories():
 
   native.maven_jar(
       name = "icu4j",
-      artifact = "com.ibm.icu:icu4j:56.1",
-      sha1 = "8dd6671f52165a0419e6de5e1016400875a90fa9",
+      artifact = "com.ibm.icu:icu4j:57.1",
+      sha1 = "198ea005f41219f038f4291f0b0e9f3259730e92",
   )
 
   native.maven_jar(
@@ -388,8 +388,8 @@ def domain_registry_repositories():
 
   native.maven_jar(
       name = "json",
-      artifact = "org.json:json:20090211",
-      sha1 = "c183aa3a2a6250293808bba12262c8920ce5a51c",
+      artifact = "org.json:json:20160212",
+      sha1 = "a742e3f85161835b95877478c5dd5b405cefaab9",
   )
 
   native.maven_jar(