Update simplejson from 3.15.0 to 3.16.0 (#3730)
Update simplejson from 3.15.0 to 3.16.0 (#3730)


KWierso/treeherder,edmorley/treeherder,KWierso/treeherder,edmorley/treeherder,KWierso/treeherder,edmorley/treeherder,edmorley/treeherder,KWierso/treeherder