Dependabot should Suggest Updating Resource API Versions

**Is your feature request related to a problem? Please describe.**
When using ARM/Bicep templates, we generally want to use API versions that are less then 2 years old. Currently, we must manually keep track of this, and manually track down each resource and API version to update.

**Describe the solution you'd like**
DependaBot offers dependency update suggestions for various languages like Python or C#. DependaBot should also be able to scan ARM/Bicep templates, and provide suggestions when a new API version is available.

DependaBot should also be able to provide "Security" related updates when critical issues are found in a specific API version.

Start by examining how Dependabot currently discovers and updates dependencies, then determine where ARM/Bicep templates could be recognized. Define how resource API versions are compared, how available updates are found, and how security-related updates would be represented. Done means the scope and integration point are established with tests covering update and security suggestions.

Written by the indexing model from the issue text.