[skip ci] Don't render zend_vm_handlers.h in PRs

Author: iluuu1994

.gitattributes

@@ -22,6 +22,7 @@
 # Collapse generated files within a pull request.
 **/*_arginfo.h linguist-generated
 /Zend/zend_vm_execute.h linguist-generated
+/Zend/zend_vm_handlers.h linguist-generated
 /Zend/zend_vm_opcodes.[ch] linguist-generated
 
 # The OSS fuzz files are bunary