Maintenance: Add new packages ecosystem to dependabot config file

[leandrodamascena]

Summary

Dependabot supports bump versions across different package ecosystems. While Java works with Maven to install Java dependencies, this repository also has other resources, such as GitHub Actions and Dockerfiles, so we need to enable these ecosystems to keep everything up to date.

References:
https://github.com/aws-powertools/powertools-lambda-python/blob/develop/.github/dependabot.yml
https://github.com/aws-powertools/powertools-lambda-typescript/blob/main/.github/dependabot.yml

Why is this needed?

Keep everything updated.

Which area does this relate to?

Automation

Solution

No response

Acknowledgment

• This request meets Powertools for AWS Lambda (Java) Tenets
• Should this be considered in other Powertools for AWS Lambda languages? i.e. Python, TypeScript