chore: Update flutter, dart, and dependencies

[robinlinden]

This change is 

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[codecov[bot]]

Codecov Report

Merging #34 (da6b4cf) into master (21258dd) will not change coverage. The diff coverage is 0.00%.

@@           Coverage Diff           @@
##           master      #34   +/-   ##
=======================================
  Coverage   41.17%   41.17%           
=======================================
  Files           7        7           
  Lines         221      221           
=======================================
  Hits           91       91           
  Misses        130      130           

Files Changed	Coverage Δ
lib/profile.dart	0.00% <0.00%> (ø)