[keyserver] Bump node-schedule to 2.1.0
Summary:
Downstream dependencies have issues surfaced by yarn audit
Checked the release notes: https://github.com/node-schedule/node-schedule/releases and there don't seem to be any breaking changes that affect us:
It looks like the two breaking changes since are
- Drop support for Node < 6
which doesn't affect us
- "This removes support for passing job objects with an execute() method instead of a function... This is technically a breaking change, although this "feature" was never documented."
which doesn't affect us either. checked cron.js which is the only place we use node-schedule and we aren't using the execute() approach anywhere
Depends on D3857
Test Plan: CI
Reviewers: def-au1t, palys-swm, ashoat
Reviewed By: ashoat
Subscribers: Adrian, karol-bisztyga, yayabosh
Differential Revision: https://phabricator.ashoat.com/D3858