chore(deps): bump mocktail from 0.3.0 to 1.0.0 (#76)

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

pubspec.yaml

@@ -17,6 +17,6 @@ screenshots:
     path: doc/screen.png
 
 dev_dependencies:
-  mocktail: ^0.3.0
+  mocktail: ">=0.3.0 <2.0.0"
   test: ^1.19.2
   very_good_analysis: ^4.0.0+1