add gha for dependabot checks

[emmyoop]

resolves #8776

Problem

No automation around GHA

Solution

Add automated checks via dependabot

Checklist

• I have read the contributing guide and understand what's expected of me
• I have run this code in development and it appears to resolve the stated issue
• This PR includes tests, or tests are not required/relevant for this PR
• This PR has no interface changes (e.g. macros, cli, logs, json artifacts, config files, adapter interface, etc) or this PR has already received feedback and approval from Product or DX
• This PR includes type annotations for new and modified functions

[codecov]

Codecov Report

All modified lines are covered by tests ✅

Comparison is base (c6ff3ab) 86.50% compared to head (bd1e73f) 86.50%.
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #8777   +/-   ##
=======================================
  Coverage   86.50%   86.50%           
=======================================
  Files         176      176           
  Lines       25821    25821           
=======================================
  Hits        22337    22337           
  Misses       3484     3484           

Flag	Coverage Δ
integration	83.27% <ø> (ø)
unit	65.12% <ø> (ø)

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