action-semantic-pull-request does not accept 'deps' as type

[dcroote]

The conventional-prs.yml Actions workflow, which uses amannn/action-semantic-pull-request, does not accept deps (which we want for release-please) as a commit type as shown by the CI failure from #58:

Unknown release type "deps" found in pull request title "deps: bump serde from 1.0.136 to 1.0.156". 

Available types:
 - feat: A new feature
 - fix: A bug fix
 - docs: Documentation only changes
 - style: Changes that do not affect the meaning of the code (white-space, formatting, missing semi-colons, etc)
 - refactor: A code change that neither fixes a bug nor adds a feature
 - perf: A code change that improves performance
 - test: Adding missing tests or correcting existing tests
 - build: Changes that affect the build system or external dependencies (example scopes: gulp, broccoli, npm)
 - ci: Changes to our CI configuration files and scripts (example scopes: Travis, Circle, BrowserStack, SauceLabs)
 - chore: Other changes that don't modify src or test files
 - revert: Reverts a previous commit

The available types are configurable though (https://github.com/amannn/action-semantic-pull-request#configuration) and I will open a PR to add deps.