Upgrade metrics-graphite to 4.0.5

This aligns with the version of metrics-core used in core Gerrit
on stable-2.15 and later.

Change-Id: I4e2604b685dd4b2be401213710b01aa755a802b5

external_plugin_deps.bzl

diff --git a/external_plugin_deps.bzl b/external_plugin_deps.bzl
index 1cb5b8b..a40f014 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:4.0.3",
-        sha1 = "557cb9adbd442852e12f8f41ddb81a889f670139",
+        artifact = "io.dropwizard.metrics:metrics-graphite:4.0.5",
+        sha1 = "76e8758356373d5aed5abacbda429b38f6e8fa98",
     )