<i18n dev> RFR: 8305113: (tz) Update Timezone Data to 2023c

[Sergey Bylokhov]

On Fri, 31 Mar 2023 00:02:02 GMT, Yoshiki Sato <ysatowse at openjdk.org> wrote:

> Pleases review this PR. 
> The PR includes the following changes.
> - tzdata 2023c
> - Hack code to deal with Cairo's DST end, which is same as done in 2014g([JDK-8049343](https://bugs.openjdk.org/browse/JDK-8049343)).  To work around the the limitation of JSR 310 compiler, where the time 24:00 is recognized as 0:00 in the previous day.

src/java.base/share/classes/sun/util/calendar/ZoneInfoFile.java line 742:

> 740: 
> 741:         return new ZoneInfo(zoneId, rawOffset, dstSavings, checksum, transitions,
> 742:                 offsets, params, willGMTOffsetChange);

do we need to change it here?

src/java.base/share/classes/sun/util/resources/TimeZoneNames.java line 2:

> 1: /*
> 2:  * Copyright (c) 1996, 2033, Oracle and/or its affiliates. All rights reserved.

Wrong year.

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PR Review Comment: https://git.openjdk.org/jdk/pull/13255#discussion_r1154945016
PR Review Comment: https://git.openjdk.org/jdk/pull/13255#discussion_r1154944389