[skip ci] Add zend_jit_arm64.c to gitignore

This is not generated in CI since moving to macOS 14, which is arm based.

Author: iluuu1994

.gitignore

@@ -169,6 +169,7 @@ php
 
 # Miscellaneous extensions files
 /ext/opcache/jit/zend_jit_x86.c
+/ext/opcache/jit/zend_jit_arm64.c
 /ext/opcache/minilua
 
 # Generated by `cd ext/name && phpize && ./configure`