Enable Dependabot

[sovitybot]

Please update the repository to include a Dependabot configuration file.
This will ensure our dependencies remain updated and secure.
Follow the guidelines in creating Dependabot configuration files to set it up properly.

Here's an example of the code:

# .github/dependabot.yaml
---
version: 2
updates:
  - package-ecosystem: 'docker'
    directory: '/'
    schedule:
      interval: 'weekly'
  - package-ecosystem: 'github-actions'
    directory: '/'
    schedule:
      interval: 'weekly'