LS-57918 setup dependabot.yml to automatically update the provider version

[adil-sultan]

Today, the process of updating provider versions is very manual. This PR configures dependabot for this repo so that when a new provider version is released, dependabot will submit a PR updating these dependencies. It will check for updates daily.

I forked this repo and tried it out here: adil-sultan#2

Before merging this PR I need the assistance of an admin to configure the security settings of the repo, steps here: https://docs.github.com/en/enterprise-cloud@latest/code-security/dependabot/dependabot-version-updates/configuring-dependabot-version-updates#enabling-version-updates-on-forks

[nslaughter]

Seems like a good way to do this for starters and great improvement. Also if the PRs turn out unuseful as configured then closing a few here shouldn't be a big deal. To consider for the future, could we get tags updated at the same time as they're important for pins downstream?

[adil-sultan]

Seems like a good way to do this for starters and great improvement. Also if the PRs turn out unuseful as configured then closing a few here shouldn't be a big deal. To consider for the future, could we get tags updated at the same time as they're important for pins downstream?

@nslaughter pushing tags after a PR commit is next on my list for these terraform repos!