Create Dependabot config file

[dependabot-preview]

👋 Dependabot is moving natively into GitHub! This pull request migrates your configuration from Dependabot.com to a config file, using the new syntax. When you merge this pull request, we'll swap out dependabot-preview (me) for a new dependabot app, and you'll be all set!

With this change, you'll now use the Dependabot page in GitHub, rather than the Dependabot dashboard, to monitor your version updates. Dependabot is now configured exclusively using config files.

If you've got any questions or feedback for us, please let us know by creating an issue in the dependabot/dependabot-core repository.

Learn more about the relaunch of Dependabot

Please note that regular @dependabot commands do not work on this pull request.

🤖💛

[codecov]

Codecov Report

Merging #95 into develop will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff            @@
##           develop      #95   +/-   ##
========================================
  Coverage    90.44%   90.44%           
========================================
  Files           27       27           
  Lines          994      994           
========================================
  Hits           899      899           
  Misses          95       95           

Flag	Coverage Δ
#pytest	90.44% <ø> (ø)

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