[Ruby] Release 0.54.0

Performance

• validate and iter_errors check each assertion keyword with the is_valid path and build an error only for a failing one.
• evaluate holds its output tree in one allocation instead of one per node.
• A pattern of ^\S*$ scans bytes instead of decoding every character.
• validate on properties beside a two-name required confirms both names in the pass that checks the properties, instead of looking each up first.
• A string enum compares an option's length and first and last eight bytes before its full text.
• A JSON Pointer segment is scanned for ~ and / eight bytes at a time before it is copied.
• Canonicalization cloning leaves per intersection and the definition map per settled target.

Changed

• Canonicalization of unevaluated* beside dependentSchemas or if/then/else, which kept the document Raw.
• Canonicalization of not over patternProperties, which kept the document Raw.

Fixed

• Canonicalization of not over an object with properties, patternProperties and additionalProperties, which applied additionalProperties to the keys listed in properties.