fix: missing code for browser for OIDC (minio#12355)

Release version RELEASE.2021-05-20T22-31-44Z

Release version RELEASE.2021-05-18T00-53-28Z

Release version RELEASE.2021-05-16T05-32-34Z

Release version RELEASE.2021-05-11T23-27-41Z

Release version RELEASE.2021-04-22T15-44-28Z

Release version RELEASE.2021-04-18T19-26-29Z

Release version RELEASE.2021-04-06T23-11-00Z

Release version RELEASE.2021-03-26T00-00-41Z

Release version RELEASE.2021-03-17T02-33-02Z