[foreign-jextract] RFR: Update jib-profiles.js to point to signed libclang.dylib

[Jorn Vernee]

Hi,

This patch updates the libclang dependency description to point to the new signed version of libclang for mac.

Thanks,
Jorn

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Commit messages:
 - Update jib-profiles.js to point to signed libclang.dylib

Changes: https://git.openjdk.java.net/panama-foreign/pull/365/files
 Webrev: https://webrevs.openjdk.java.net/?repo=panama-foreign&pr=365&range=00
  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.java.net/panama-foreign/pull/365.diff
  Fetch: git fetch https://git.openjdk.java.net/panama-foreign pull/365/head:pull/365

PR: https://git.openjdk.java.net/panama-foreign/pull/365