add dependabot for actions and go

[davidgamero]

Description

Configurate dependabot to make PRs for updating our actions in generated workflows using the directory option

Type of change

Please delete options that are not relevant.

• [X] New feature (non-breaking change which adds functionality)

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce. Please also list any relevant details for your test configuration. Is it a breaking change which will impact consuming tool(s).

• [X] Tested on a separate branch to validate dependabot will detect actions from subdirectories

[qpetraroia]

Love this! Thank you @davidgamero !!!