Bump handlebars from 3.5.3 to 4.1.4 (#10273)

Bumps [handlebars](https://github.com/sunng87/handlebars-rust) from 3.5.3 to 4.1.4.
- [Release notes](https://github.com/sunng87/handlebars-rust/releases)
- [Changelog](https://github.com/sunng87/handlebars-rust/blob/master/CHANGELOG.md)
- [Commits](https://github.com/sunng87/handlebars-rust/compare/v3.5.3...v4.1.4)

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

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

substrate/utils/frame/benchmarking-cli/Cargo.toml

@@ -28,7 +28,7 @@ codec = { version = "2.0.0", package = "parity-scale-codec" }
 structopt = "0.3.25"
 chrono = "0.4"
 serde = "1.0.126"
-handlebars = "3.5.0"
+handlebars = "4.1.4"
 Inflector = "0.11.4"
 linked-hash-map = "0.5.4"
 log = "0.4.8"