Add Dependabot config for updating GHAs

[danielhollas]

Copied over from aiidalab/aiidalab

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 87.07%. Comparing base (e976b48) to head (c49b8cb).

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #560   +/-   ##
=======================================
  Coverage   87.07%   87.07%           
=======================================
  Files          27       27           
  Lines        4649     4649           
=======================================
  Hits         4048     4048           
  Misses        601      601           

Flag	Coverage Δ
python-3.10	87.07% <ø> (ø)
python-3.9	87.10% <ø> (ø)

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[danielhollas]

Hmm, would be good to tweak Codecov config so that it does not make a PR post when there are no changes to Python files. Not sure if that is possible.

[unkcpz]

Hmm, would be good to tweak Codecov config so that it does not make a PR post when there are no changes to Python files. Not sure if that is possible.

If the test didn't run, the codecov will not triggered. So I think if we exclude the precommit config yaml from test CI, it will not be run.

Let's get this merged first, and we'll see what will be triggered when the bot running the update.

[unkcpz]

Thanks @danielhollas