Bug 1790816 - Reformat services/ with isort. r=linter-reviewers,Standard8 DONTBUILD

# ignore-this-changeset

Differential Revision: https://phabricator.services.mozilla.com/D162653

services/settings/dumps/gen_last_modified.py

@@ -3,8 +3,8 @@
 # License, v. 2.0. If a copy of the MPL was not distributed with this
 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
-import json
 import glob
+import json
 import os
 
 import buildconfig