policies: Fix effective date on most recent DPA update.

The effective date on the DPA should have been February 7, because we
didn't actually update the zulip.com website until that day.

(This commit was added to the internal zulip.com branch during
deployment of the last DPA update, so users always saw the correct
information).
This commit is contained in:
Tim Abbott
2022-02-07 22:04:33 -08:00
parent 92cc771392
commit 5d136887b5