ENH: Add a dependabot workflow

[khalford]

This workflow will create pull requests for all outdated github action versions

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 81.08%. Comparing base (ff9b066) to head (9ada928).

❗ There is a different number of reports uploaded between BASE (ff9b066) and HEAD (9ada928). Click for more details.

HEAD has 3 uploads less than BASE

Flag	BASE (ff9b066)	HEAD (9ada928)
	4	2
rabbit_consumer	1	0

Additional details and impacted files

@@             Coverage Diff             @@
##           master     #160       +/-   ##
===========================================
- Coverage   97.20%   81.08%   -16.13%     
===========================================
  Files          66        3       -63     
  Lines        3046       74     -2972     
===========================================
- Hits         2961       60     -2901     
+ Misses         85       14       -71     

Flag	Coverage Δ
rabbit_consumer	?

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