NOISSUE - Update version.go with 0.12.1 (#1418)
NOISSUE - Update version.go with 0.12.1 (#1418)

Signed-off-by: Manuel Imperiale <ead3e7f78ada2e2bc6608c5fd9acfbf3f9784726@gmail.com>
drasko/mainflux,drasko/mainflux,drasko/mainflux