[lworld] Integrated: 8371318: [lworld] Bump copyright after JDK-8370479

[Paul Hübner]

This is a trivial follow-up fix.

Sanity tested with `hotspot_valhalla`.

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Commit messages:
 - Update copyright.

Changes: https://git.openjdk.org/valhalla/pull/1722/files
  Webrev: https://webrevs.openjdk.org/?repo=valhalla&pr=1722&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8371318
  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/valhalla/pull/1722.diff
  Fetch: git fetch https://git.openjdk.org/valhalla.git pull/1722/head:pull/1722

PR: https://git.openjdk.org/valhalla/pull/1722