Bump giantswarm/golang from 1.15.2 to 1.15.3 (#1109)
Bump giantswarm/golang from 1.15.2 to 1.15.3 (#1109)

Co-authored-by: dependabot[bot] <1c358da00a777d4e9898c1280ab801e2df165188@users.noreply.github.com>
giantswarm/azure-operator,giantswarm/azure-operator,giantswarm/azure-operator