build(deps): Update handlebars requirement in /dt-core

Updates the requirements on [handlebars](https://github.com/sunng87/handlebars-rust) to permit the latest version.
- [Release notes](https://github.com/sunng87/handlebars-rust/releases)
- [Changelog](https://github.com/sunng87/handlebars-rust/blob/master/CHANGELOG.md)
- [Commits](sunng87/handlebars-rust@v4.4.0...v5.0.0)

---
updated-dependencies:
- dependency-name: handlebars
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

dt-core/Cargo.toml

@@ -16,7 +16,7 @@ content_inspector = "0.2.4"
 dirs = "5.0.1"
 gethostname = "0.4.3"
 glob = "0.3.1"
-handlebars = "4.4.0"
+handlebars = "5.0.0"
 log = "0.4.20"
 path-clean = "1.0.1"
 regex = "1.9.5"