Bump syntect from 4.6.0 to 5.0.0

Bumps [syntect](https://github.com/trishume/syntect) from 4.6.0 to 5.0.0.
- [Release notes](https://github.com/trishume/syntect/releases)
- [Changelog](https://github.com/trishume/syntect/blob/master/CHANGELOG.md)
- [Commits](https://github.com/trishume/syntect/compare/v4.6.0...v5.0.0)

---
updated-dependencies:
- dependency-name: syntect
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Cargo.toml

@@ -23,7 +23,7 @@ actix-web = "4.0"
 htmlescape = "0.3"
 askama = "0.11"
 bat = "0.20"
-syntect = "4.6"
+syntect = "5.0"
 tokio = { version = "1.20", features = ["sync"] }
 futures = "0.3"