v4.6.3

A patch on top of 4.6.2.

• 413cce9a fix(v4): make z.properties() a check again (#6594) — removes the standalone z.properties() schema from 4.6.0; z.instanceof().properties() and .check(...z.properties()) are unchanged
• 75d63ee1 docs: show only the .properties() method form in the 4.6 post
• 46da9572 docs: match the error-message examples to what the parsers emit