RFR: 8385: Upgrade hashing algorithm

[Suchita Chaturvedi]

Upgrading hashing algorithm as part of this PR.

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Commit messages:
 - 8385: Upgrade hashing algorithm

Changes: https://git.openjdk.org/jmc/pull/641/files
  Webrev: https://webrevs.openjdk.org/?repo=jmc&pr=641&range=00
  Issue: https://bugs.openjdk.org/browse/JMC-8385
  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jmc/pull/641.diff
  Fetch: git fetch https://git.openjdk.org/jmc.git pull/641/head:pull/641

PR: https://git.openjdk.org/jmc/pull/641