Update tree-sitter to 0.18.2

Summary:
Summarized changelog:

• Fix getting node by field name or ID.
• Added LOG_LOOKAHEAD macro to escape \n in logging.

Git comparison here.

Test Plan: Switched radare2 to new shell commands parser (e cfg.newshell=true) and executed analysis, seek and visualisation commands.

Reviewers: Triage Team, JoshStrobl

Reviewed By: Triage Team, JoshStrobl

Subscribers: JoshStrobl

Differential Revision: https://dev.getsol.us/D10535