WP-3489 Release dart_dev 1.7.3

[rm-astro-wf]

Pulls Included in Release:

• WP-3669 : added docs.yml
• WP-3881 Widen dart_style range to include 1.x

Requested by: @jayudey-wf

Diff Between Last Tag and Proposed Release: 1.7.2...version-bump-dart_dev-1-7-3
Diff Between Last Tag and New Tag: 1.7.2...1.7.3

[maxwellpeterson-wf]

+1

[trentgrover-wf]

+1

[evanweible-wf]

+1

[codecov-io]

Codecov Report

Merging #219 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #219   +/-   ##
=======================================
  Coverage   21.63%   21.63%           
=======================================
  Files           7        7           
  Lines         171      171           
=======================================
  Hits           37       37           
  Misses        134      134

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[maxwellpeterson-wf]

QA +1

• Dev +1's only needed for Release ticket

Ready for merge and tag.