Release v0.1.5

Changelog

Refactoring

• 87f20e9: refactor(testutil): extract postgres config logic for unit testing (@mrz1836)

Other Changes

• 1f6b60f: test(db,lambda,secrets): add injectable seams to cover error branches (@mrz1836)
• f6e300a: test(middleware): cover Unwrap and error-body truncation (@mrz1836)
• 9b56255: test(models): make email normalization testable and add coverage (@mrz1836)