chore(github): run e2e workflow against master periodically (#2528)
chore(github): run e2e workflow against master periodically (#2528)

Run the e2e GitHub workflow against master periodically, twice per day,
at 00:30 and 12:30 ET.

Signed-off-by: Nick Hale <c15dd495805fb40adf63a65657081f6fd80cc879@gmail.com>
operator-framework/operator-lifecycle-manager,operator-framework/operator-lifecycle-manager