RFR: 7903922: Update copyright year for jextract in files where it was missed

[Nizar Benalla]

I have sampled a few files to manually check that this works as intended, I got the list of files changed in a certain year by running.


git log --since="Jan 1" --name-only --pretty=format: | sort -u > 2024file.list
git log --oneline --since="1/1/2023" --until="31/12/2023" --name-only --pretty=format: | sort -u > 2023file.list


And then used a script to update the copyright year, I did a random sampling of files to check that it worked as intended.

A few files had their original copyright year changed because I noticed they were added in 2024 instead.

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Commit messages:
 - Manually fix files that were created on 11/01/24
 - Update (C) for 2024
 - Update (C) for 2023

Changes: https://git.openjdk.org/jextract/pull/267/files
  Webrev: https://webrevs.openjdk.org/?repo=jextract&pr=267&range=00
  Issue: https://bugs.openjdk.org/browse/CODETOOLS-7903922
  Stats: 66 lines in 66 files changed: 0 ins; 0 del; 66 mod
  Patch: https://git.openjdk.org/jextract/pull/267.diff
  Fetch: git fetch https://git.openjdk.org/jextract.git pull/267/head:pull/267

PR: https://git.openjdk.org/jextract/pull/267