Bugs in the auto implementation for #123

[innokenty]

Codebase

Original feature issue: #123
Golden implementation PR: #132
Golden implementation branch: task/#123-Release-Planning-and-Roadmapping-Extending-Core-API-Releases-with-enhanced-data

Auto-generated implementation branch: toloka-agent/123-auto
Auto implementation with golden tests branch: toloka-agent/123-auto-golden-test
(note that there are some fixes for the tests in this branch too!)

Failed Golden Tests

[ERROR] Failures: 
[ERROR]   ReleaseControllerTests.shouldReturn400WhenUpdatingReleaseWithoutStatus:356 [HTTP status code] 
expected: 400
 but was: 500
[ERROR]   ReleaseControllerTests.shouldReturn404WhenUpdatingNonExistentRelease:375 [HTTP status code] 
expected: 404
 but was: 500
[INFO] 
[ERROR] Tests run: 44, Failures: 2, Errors: 0, Skipped: 0