Migrate to Scala 3

[tbinna]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 45.83333% with 13 lines in your changes missing coverage. Please review.
✅ Project coverage is 85.36%. Comparing base (99cebfb) to head (c30984a).
⚠️ Report is 2 commits behind head on master.

Files with missing lines	Patch %	Lines
...connect/play/controllers/LifecycleController.scala	0.00%	6 Missing ⚠️
.../asymmetric/AssociateAtlassianHostUserAction.scala	40.00%	3 Missing ⚠️
...c/SymmetricallySignedAtlassianHostUserAction.scala	60.00%	2 Missing ⚠️
...an/connect/play/api/models/AtlassianHostUser.scala	0.00%	1 Missing ⚠️
...connect/play/auth/jwt/symmetric/JwtGenerator.scala	80.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master      #94      +/-   ##
==========================================
- Coverage   88.60%   85.36%   -3.24%     
==========================================
  Files          32       35       +3     
  Lines         386      492     +106     
  Branches       47       75      +28     
==========================================
+ Hits          342      420      +78     
- Misses         44       72      +28     

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