Update third party notice.

[Yury-Fridlyand]

Description

In opensearch-project/sql#479 ODBC driver was updated to use libcurl as a http transport library. Unfortunately, we missed to update 3rd party notice file.
I added curl notice from https://github.com/curl/curl/blob/master/COPYING and removed PostgreS one, because there are no no postgres libs or dependencies. Perhaps it is a legacy part or copied by mistake from another driver.

Issues Resolved

N/A

Check List

• New functionality includes testing.
  • All tests pass, including unit test, integration test and doctest
• New functionality has been documented.
  • New functionality has javadoc added
  • New functionality has user manual doc added
• Commits are signed per the DCO using --signoff

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.
For more information on following Developer Certificate of Origin and signing off your commits, please check here.

[GumpacG]

Does src/CMakeLists.txt need to have a license header as well as per https://docs.oracle.com/cd/E37069_01/html/E37094/glpkn.html?

[acarbonetto]

Does src/CMakeLists.txt need to have a license header as well as per https://docs.oracle.com/cd/E37069_01/html/E37094/glpkn.html?

I don't think that's the cmake file generated by autoconf, nor are they makefiles. I think we're ok just to put it into the THIRD-PARTY.