Update syntax grammar for Rust

[zakcutner]

Hello! I wanted to update to a newer version of Rust syntax grammar that fixes a bug in dustypomerleau/rust-syntax#12 where lifetimes couldn't be included within macro attributes. Without this, large parts of some files that I am working on are mistakenly highlighted as an unclosed quotation. It seems this is also related to #64488.

[dustypomerleau]

@alexr00 has mentioned in the past that the latest Textmate grammars are scraped roughly once a month, so—correct me if I'm wrong, Alex—I believe no action is needed to get the upstream changes from Rust Syntax merged. In the interim, you can use the Rust Syntax extension, which should play nicely with Rust Analyzer now that RA is not shipping a grammar. The Textmate scopes will only be visible with "[rust]": { "editor.semanticHighlighting.enabled": false } in your settings.json, otherwise RA will override with semantic scopes.

Regarding #64488, I think it should probably be closed at this point. The grammar still needs minor improvements—which I am working on—but the essence of the issue has been fixed. In truth, most serious Rustaceans are using semantic highlighting via Rust Analyzer, but the current grammar provides reasonable default VS Code highlighting.

[alexr00]

@dustypomerleau is correct. I usually re-scrape all grammars at the beginning of an iteration, but if someone pings me to say that a very valuable fix is available I can update again.

So @zakcutner thank you for the PR! However, the script we use to update grammars includes some other changes, like the commit and version number. I've just pulled in the latest Rust grammar with 92d4b14 to pick up the change you mentioned and it will be in the next Insiders build (which will be in the first week of January, we paused it for the holidays).