devel/ghidra: Update to 9.1
- Now that openjdk11+ are registered in bsd.java.mk, drop the JDK11 and JDK12 options
Changes: https://ghidra-sre.org/releaseNotes_9.1_final.html#9_1
PR: 239902
Submitted by: Tamas Szakaly <sghctoma@gmail.com> (maintainer)