RFR: 7874: Update thirdpartyreadme.txt file for upgraded third party libraries

[Virag Purnam]

Updated the License information in thirdpartyreadme.txt file.

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Commit messages:
 - 7874: Update thirdpartyreadme.txt file for upgraded third party libraries

Changes: https://git.openjdk.org/jmc/pull/422/files
 Webrev: https://webrevs.openjdk.org/?repo=jmc&pr=422&range=00
  Issue: https://bugs.openjdk.org/browse/JMC-7874
  Stats: 6894 lines in 1 file changed: 5547 ins; 857 del; 490 mod
  Patch: https://git.openjdk.org/jmc/pull/422.diff
  Fetch: git fetch https://git.openjdk.org/jmc pull/422/head:pull/422

PR: https://git.openjdk.org/jmc/pull/422