[jdk13u-dev] Integrated: 8274407: (tz) Update Timezone Data to 2021c

[Yuri Nesterenko]

This is a necessary update for an active release. The changes apply cleanly. Some 100 relevant tests? all of them, do pass.

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Commit messages:
 - Backport 8ca084617f331b6af934179f3f776c8158da5bba

Changes: https://git.openjdk.java.net/jdk13u-dev/pull/283/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk13u-dev&pr=283&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8274407
  Stats: 635 lines in 13 files changed: 228 ins; 329 del; 78 mod
  Patch: https://git.openjdk.java.net/jdk13u-dev/pull/283.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk13u-dev pull/283/head:pull/283

PR: https://git.openjdk.java.net/jdk13u-dev/pull/283