feat: drop Node 4, 6, 8, 10, 12, 14 & 16 support#141

MichaelDeBoey wants to merge 1 commit intojsx-eslint:mainjsx-eslint/jsx-ast-utils:mainfrom

MichaelDeBoey:drop-Node-4-6-8-10-12-14-16MichaelDeBoey/jsx-ast-utils:drop-Node-4-6-8-10-12-14-16Copy head branch name to clipboard