chore(deps): update doc-comment requirement from 0.1 to 0.3
chore(deps): update doc-comment requirement from 0.1 to 0.3

Updates the requirements on [doc-comment](https://github.com/GuillaumeGomez/doc-comment) to permit the latest version.
- [Release notes](https://github.com/GuillaumeGomez/doc-comment/releases)
- [Commits](https://github.com/GuillaumeGomez/doc-comment/commits)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
cobalt-org/liquid-rust