[jdk21u-dev] RFR: 8326360: Update the Zlib version in open/src/java.base/share/legal/zlib.md to 1.3

[Goetz Lindenmaier]

I backport this to keep this external lib up to date and to match OracleJDK.

Consists of three clean backports. I want to merge them here to limit the effort of further backporting:

8315117: Update Zlib Data Compression Library to Version 1.3
8324632: Update Zlib Data Compression Library to Version 1.3.1
8326351: Update the Zlib version in open/src/java.base/share/legal/zlib.md to 1.3.1

Will mark clean.

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Commit messages:
 - Backport 8326351: Update the Zlib version in open/src/java.base/share/legal/zlib.md to 1.3.1
 - Backport 8324632: Update Zlib Data Compression Library to Version 1.3.1
 - Backport 8315117: Update Zlib Data Compression Library to Version 1.3

Changes: https://git.openjdk.org/jdk21u-dev/pull/355/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=355&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8326360
  Stats: 2220 lines in 26 files changed: 609 ins; 1036 del; 575 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/355.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/355/head:pull/355

PR: https://git.openjdk.org/jdk21u-dev/pull/355