graphics/ptex: update to 2.4.2 release (+)
- Drop custom do-install target, cmake automation do it well
- Bump direct consumers
Changes sinve 2.3.2 release:
v2.4.0 May 18, 2021 API: headers and DSOs hide non-API symbols by default.
v2.4.1 Aug 3, 2021 API: Windows symbol visibility fixes.
v2.4.2 Aug 4, 2022 API: Windows Clang/14 support, visibility fixes and cmake enhancements.
Approved by: maintaimer (implicit)