autobump: style fix

Fix an instance of:
  E501: line too long (85 > 79 characters)

Fixes: d125d76eabe1484766135c34c8d6e9e6f681acb7
Change-Id: I8d7e9e6c93491762b5e1eb0fcbe7c207f2f37f5d
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/openbmc-autobump/openbmc-autobump.py b/openbmc-autobump/openbmc-autobump.py
index a3612cd..cbe8978 100755
--- a/openbmc-autobump/openbmc-autobump.py
+++ b/openbmc-autobump/openbmc-autobump.py
@@ -174,7 +174,10 @@
 
         git.commit(sh.echo(commit_msg), '-s', '-F', '-', _cwd=meta)
 
-        push_args = ['origin', 'HEAD:refs/for/{}%topic=autobump'.format(args.branch)]
+        push_args = [
+            'origin',
+            'HEAD:refs/for/{}%topic=autobump'.format(args.branch)
+        ]
         if not args.dry_run:
             git.push(*push_args, _cwd=meta)