docs: update supported engines in readme (#5725)

Author: lukekarrys

README.md

@@ -9,9 +9,9 @@
 
 One of the following versions of [Node.js](https://nodejs.org/en/download/) must be installed to run **`npm`**:
 
-* `12.x.x` >= `12.13.0`
-* `14.x.x` >= `14.15.0`
-* `16.0.0` or higher
+* `14.x.x` >= `14.17.0`
+* `16.x.x` >= `16.13.0`
+* `18.0.0` or higher
 
 ### Installation