upgrade drone-go to 1.5.0

go.mod

@@ -8,7 +8,7 @@ require (
 	github.com/buildkite/yaml v2.1.0+incompatible
 	github.com/coreos/go-semver v0.3.0
 	github.com/docker/go-units v0.4.0
-	github.com/drone/drone-go v1.4.1-0.20201109202657-b9e58bbbcf27
+	github.com/drone/drone-go v1.5.0
 	github.com/drone/envsubst v1.0.2
 	github.com/google/go-cmp v0.3.0
 	github.com/hashicorp/go-multierror v1.0.0

go.sum

@@ -20,6 +20,8 @@ github.com/drone/drone-go v1.2.1-0.20200326064413-195394da1018/go.mod h1:GxyeGCl
 github.com/drone/drone-go v1.3.1 h1:D4KXbauJtbT/zXk19TcMpu36F8GPOUcndIw7pOWsX6k=
 github.com/drone/drone-go v1.4.1-0.20201109202657-b9e58bbbcf27 h1:58xKlW/Kwp/Apz+R5qNGzBUIzfq1Z57L7Udz1B6bgWE=
 github.com/drone/drone-go v1.4.1-0.20201109202657-b9e58bbbcf27/go.mod h1:fxCf9jAnXDZV1yDr0ckTuWd1intvcQwfJmTRpTZ1mXg=
+github.com/drone/drone-go v1.5.0 h1:4rM74O3Xd6SnkdRIidlwwhVAPs4dXvcdVCgGvkrqL1M=
+github.com/drone/drone-go v1.5.0/go.mod h1:fxCf9jAnXDZV1yDr0ckTuWd1intvcQwfJmTRpTZ1mXg=
 github.com/drone/envsubst v1.0.2 h1:dpYLMAspQHW0a8dZpLRKe9jCNvIGZPhCPrycZzIHdqo=
 github.com/drone/envsubst v1.0.2/go.mod h1:bkZbnc/2vh1M12Ecn7EYScpI4YGYU0etwLJICOWi8Z0=
 github.com/google/go-cmp v0.2.0/go.mod h1:oXzfMopK8JAjlY9xF4vHSVASa0yLyX7SntLO5aqRK0M=