Update typing from 3.6.4 to 3.6.6 (#3956)
Update typing from 3.6.4 to 3.6.6 (#3956)


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