chore: release 1.14.2 (#505)
:robot: I have created a release \*beep\* \*boop\*
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### [1.14.2](https://www.github.com/googleapis/google-auth-library-python/compare/v1.14.1...v1.14.2) (2020-05-07)
### Bug Fixes
* support string type response.data ([#504](https://www.github.com/googleapis/google-auth-library-python/issues/504)) ([9b7228e](https://www.github.com/googleapis/google-auth-library-python/commit/9b7228ec849e311bcb4007ad3e23cf2f1e54a721))
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This PR was generated with [Release Please](https://github.com/googleapis/release-please).
