v42.0.0

⚠ BREAKING CHANGES

• auth: pulling in updated idempotent google-auth-library (#1769)

Bug Fixes

• deps: pull in version of gts that does not OOM error (#1780) (c09e6f4)
• deps: update dependency googleapis-common to v3 (#1774) (9607c02)

Code Refactoring

• auth: pulling in updated idempotent google-auth-library (#1769) (168ad6b)