ci: change gen cron to run every two weeks on the first and third Tue… (#1390)

* ci: change gen cron to run every two weeks on the first and third Tuesday of each month

Author: MIchaelMainer

.azure-pipelines/generation-pipeline.yml

@@ -3,8 +3,15 @@
 trigger: none
 pr: none
 schedules:
-- cron: '0 10 * * TUE'
-  displayName: Tuesday generation (PST 2am, EST 5am, EAT 3pm)
+
+# Minute: 0 → At the start of the hour.
+# Hour: 10 → 10:00 AM UTC.
+# Day of Month: 1-7,15-21 → On the 1st–7th and 15th–21st.
+# Month: * → Every month.
+# Weekday: TUE → Only on Tuesdays.
+# This cron will run bi-weekly unless the month has 5 Tuesdays, in which case it will skip the 5th Tuesday (won't be bi-weekly that month).
+- cron: '0 10 1-7,15-21 * TUE'
+  displayName: Bi-weekly Tuesday generation (1st and 3rd Tuesday, PST 2am, EST 5am, EAT 3pm)
   branches:
     include:
     - main