First release candidate for 3.1.0

This is effectively a test of the new release GitHub action

Update to TZDB 2022a for release 3.0.10

Update to TZDB 2022a for release 2.4.18

Update to TZDB 2021e for release 3.0.9

Update to TZDB 2021e for release 2.4.17

Update to TZDB 2021d for release 3.0.8

Update to TZDB 2021d for release 2.4.16

Update to TZDB 2021c for release 3.0.7

Update to TZDB 2021c for release 2.4.15

Update to TZDB 2021b for release 3.0.6