Added GutHub Actions to Dependabot config

[freemanjp]

To keep the actions updated.

[codecov]

Codecov Report

Merging #456 (56b8c0b) into master (6c2f08b) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master     #456   +/-   ##
=========================================
  Coverage     85.34%   85.34%           
  Complexity       91       91           
=========================================
  Files            16       16           
  Lines           539      539           
  Branches         71       71           
=========================================
  Hits            460      460           
  Misses           34       34           
  Partials         45       45           

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