Create dependabot.yml and codecov.yml

[odunbar]

Purpose

Dependabot will check for github-actions updates
Closes #331

To-do

Content

---

• I have read and checked the items on the review checklist.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 88.82%. Comparing base (a39e67a) to head (a0cd617).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #332   +/-   ##
=======================================
  Coverage   88.82%   88.82%           
=======================================
  Files           7        7           
  Lines        1271     1271           
=======================================
  Hits         1129     1129           
  Misses        142      142           

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