bug: doesn't accept two semicolons to separate properties

[wetneb]

Did you check existing issues?

• I have read all the tree-sitter docs if it relates to using the parser
• I have searched the existing issues of tree-sitter-css

Tree-Sitter CLI Version, if relevant (output of tree-sitter --version)

No response

Describe the bug

This is valid CSS:

.test {
  color: red;;
  margin: 0;
}

Steps To Reproduce/Bad Parse Tree

Parse the above

Expected Behavior/Parse Tree

Like with only one semicolon

Repro

.test {
  color: red;;
  margin: 0;
}

[mohamedmansour]

We shouldn't want the parser to handle invalid CSS right? This should be still treated as ERROR.

[wetneb]

I would expect tree-sitter-css to parse any input that the W3C CSS validator accepts, but maybe the maintainers of this repo have other criteria in mind.