Upgrade wiremock to 2.25.0

Change-Id: Ie0b5a095b9ac82491c9db7993574df8099bdb74d

external_plugin_deps.bzl

diff --git a/external_plugin_deps.bzl b/external_plugin_deps.bzl
index b34ee6d..9b5e43b 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:2.24.1",
-        sha1 = "52c100df7c31c06e5209a77b85d4f695d40ba76a",
+        artifact = "com.github.tomakehurst:wiremock-standalone:2.25.0",
+        sha1 = "2235aeaaefe8d367138d2109f444e85a6040bf5a",
     )
 
     maven_jar(