RFR: making jextract work with latest panama-foreign repo targetting jdk 20 [v2]

[Athijegannathan Sundararajan]

> making jextract work with latest panama-foreign repo targetting jdk 20

Athijegannathan Sundararajan has updated the pull request incrementally with one additional commit since the last revision:

  version info changed in README.md

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Changes:
  - all: https://git.openjdk.org/jextract/pull/60/files
  - new: https://git.openjdk.org/jextract/pull/60/files/0af0593d..efaaa1c9

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jextract&pr=60&range=01
 - incr: https://webrevs.openjdk.org/?repo=jextract&pr=60&range=00-01

  Stats: 3 lines in 1 file changed: 0 ins; 0 del; 3 mod
  Patch: https://git.openjdk.org/jextract/pull/60.diff
  Fetch: git fetch https://git.openjdk.org/jextract pull/60/head:pull/60

PR: https://git.openjdk.org/jextract/pull/60