Upgrade commons-codec to 1.15

An ealier attempt to upgrade this libary got abandoned because Google
was still using an older version (see change I09d5e4f16). Google is on
version 1.15 now, so we can do the upgrade now.

Other than just being on a newer version there is no particular reason
for the upgrade.

Bug: Google b/117900950
Release-Notes: Upgraded commons-codec to 1.15
Signed-off-by: Edwin Kempin <ekempin@google.com>
Change-Id: I62c909957b596e612b70367262fb26367f1f5b04
diff --git a/tools/deps.bzl b/tools/deps.bzl
index 5842502..ed8d65f5 100644
--- a/tools/deps.bzl
+++ b/tools/deps.bzl
@@ -114,8 +114,8 @@
 
     maven_jar(
         name = "commons-codec",
-        artifact = "commons-codec:commons-codec:1.10",
-        sha1 = "4b95f4897fa13f2cd904aee711aeafc0c5295cd8",
+        artifact = "commons-codec:commons-codec:1.15",
+        sha1 = "49d94806b6e3dc933dacbd8acb0fdbab8ebd1e5d",
     )
 
     # When upgrading commons-compress, also upgrade tukaani-xz