Upgrade mockito-core to 2.25.1

Change-Id: Ie7865312b6ba260ae97517aedad2b7427164868a
diff --git a/external_plugin_deps.bzl b/external_plugin_deps.bzl
index ff97a63..3facffc 100644
--- a/external_plugin_deps.bzl
+++ b/external_plugin_deps.bzl
@@ -9,8 +9,8 @@
 
     maven_jar(
         name = "mockito",
-        artifact = "org.mockito:mockito-core:2.25.0",
-        sha1 = "1fcf2f6944d69b6f39cd579718d8b5395a97836b",
+        artifact = "org.mockito:mockito-core:2.25.1",
+        sha1 = "e8fa2864b65c0b6fbb20daa436a94853bcd17e5e",
         deps = [
             "@byte-buddy//jar",
             "@byte-buddy-agent//jar",