Add additional commit message type "deps" to categorize dependency updates

[sspaink]

The Telegraf project has a lot of dependencies, therefore we get a lot of pull requests that update the dependencies (such as this one influxdata/telegraf#11266) and we are reporting these in the changelog in a separate section. I was hoping to find a way to categorize these types of pull requests so when we generate the changelog it gets sorted automatically.

@jacobmarble and @tysonkamp What do you think about extending the support "types" (e.g. feat,fix) to include something like "deps"? This definitely isn't a blocker, I think there are other approaches we can take, but curious to hear your thoughts on this possibility?

[tysonkamp]

I'm fine with it, but I am no opinionated regarding commit messages. @jacobmarble I defer to you and other dev managers and dev teams. Thoughts?

[domodwyer]

For what it's worth, dependabot opens PRs tagged as chore(deps) which might be worth using for consistency with the automated stuff 👍

[sspaink]

I didn't know dependabot already had a convention with chore(deps), we can definitely work with that for automation. Thank you!