Parser raises ValueError instead of ParseError for empty strings

[MSDehghan]

• I am on the latest Pendulum version.

• I have searched the issues of this repo and believe that this is not a duplicate.

• OS version and name: Ubuntu 24.04

• Pendulum version: 3.0.0

Issue

Current Behavior:
pendulum.parse("") raises ValueError: year 0 is out of range. Apparently it should raise ParseError just like the case of passing a single-space string(pendulum.parse(" ")) which raises ParserError: Unable to parse string [ ] .

Expected Behavior:
It should raise ParserError: Unable to parse string [].

[samkohn]

This is still an issue in 3.1.0.