[jdk21u-dev] RFR: 8353787: Increased number of SHA-384-Digest java.util.jar.Attributes$Name instances leading to higher memory footprint

[Goetz Lindenmaier]

I backport this for parity with 21.0.8-oracle

Resolved Copyright, probably clean.

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Commit messages:
 - Backport b64cdc28132c889ca8e21dc9534590ba2a778bcd

Changes: https://git.openjdk.org/jdk21u-dev/pull/1680/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=1680&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8353787
  Stats: 2 lines in 1 file changed: 1 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/1680.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/1680/head:pull/1680

PR: https://git.openjdk.org/jdk21u-dev/pull/1680