Upgrade wiremock to 2.27.1

Change-Id: Idb2c00d20234960ee605dc022330339cc574ec2f

external_plugin_deps.bzl

diff --git a/external_plugin_deps.bzl b/external_plugin_deps.bzl
index 754ccab..6387df2 100644
--- a/external_plugin_deps.bzl
+++ b/external_plugin_deps.bzl
@@ -3,8 +3,8 @@
 def external_plugin_deps():
     maven_jar(
         name = "wiremock",
-        artifact = "com.github.tomakehurst:wiremock-standalone:2.27.0",
-        sha1 = "d869289b3f9380769aaac4993e240ab37b09098e",
+        artifact = "com.github.tomakehurst:wiremock-standalone:2.27.1",
+        sha1 = "b7ecbb8f92b0f5ecd54176227845f1e0357b4ce5",
     )
 
     maven_jar(