Build(deps): Bump @glimmer/syntax from 0.54.1 to 0.55.0 (#8799)
Bumps [@glimmer/syntax](https://github.com/glimmerjs/glimmer-vm) from 0.54.1 to 0.55.0.
- [Release notes](https://github.com/glimmerjs/glimmer-vm/releases)
- [Changelog](https://github.com/glimmerjs/glimmer-vm/blob/master/CHANGELOG.md)
- [Commits](https://github.com/glimmerjs/glimmer-vm/compare/v0.54.1...v0.55.0)
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