Log Message:
time/ruby-tzinfo-data: update to 1.2021.5

1.2021.2 (2021-09-26)

* Based on version 2021b of the IANA Time Zone Database
  (https://mm.icann.org/pipermail/tz-announce/2021-September/000066.html).

1.2021.3 (2021-10-02)

* Based on version 2021c of the IANA Time Zone Database
  (https://mm.icann.org/pipermail/tz-announce/2021-October/000067.html).

1.2021.4 (2021-10-16)

* Based on version 2021d of the IANA Time Zone Database
  (https://mm.icann.org/pipermail/tz-announce/2021-October/000068.html).

1.2021.5 (2021-10-23)

* Based on version 2021e of the IANA Time Zone Database
  (https://mm.icann.org/pipermail/tz-announce/2021-October/000069.html).