fix(syntaxes): Semicolons not tokenized

[dannymcgee]

This PR adds the punctuationSemicolon pattern to the expression grammar's pattern list, which ensures that the punctuation.terminator scope is actually applied to the matching syntax.

[angular-automatic-lock-bot]

This issue has been automatically locked due to inactivity.
Please file a new issue if you are encountering a similar or related problem.

Read more about our automatic conversation locking policy.

_{This action has been performed automatically by a bot.}