Bump dependency metrics-graphite to 4.2.25

Changelog:
https://github.com/dropwizard/metrics/compare/v4.1.12.1...v4.2.25

Change-Id: I7415fb5fba3d02ea7e64fcd3518aa805a2a6f8a3

external_plugin_deps.bzl

diff --git a/external_plugin_deps.bzl b/external_plugin_deps.bzl
index c990e1c..c62be8c 100644
--- a/external_plugin_deps.bzl
+++ b/external_plugin_deps.bzl
@@ -3,6 +3,6 @@
 def external_plugin_deps():
     maven_jar(
         name = "metrics_graphite",
-        artifact = "io.dropwizard.metrics:metrics-graphite:4.1.12.1",
-        sha1 = "f7a5ef6ac15eee9af221d052821d12a08bf8bcdf",
+        artifact = "io.dropwizard.metrics:metrics-graphite:4.2.25",
+        sha1 = "62b9a871779a78604172962795cbcc05151948df",
     )