Bump golang 1.13 (#171)

* *: bump Go version to 1.13

Signed-off-by: Simon Pasquier <spasquie@redhat.com>

* Fix go.mod and vendor/

Signed-off-by: Simon Pasquier <spasquie@redhat.com>

Author: simonpasquier

.circleci/config.yml

@@ -5,7 +5,7 @@ executors:
   # Whenever the Go version is updated here, .promu.yml should also be updated.
   golang:
     docker:
-    - image: circleci/golang:1.12
+    - image: circleci/golang:1.13
 
 jobs:
   test:

.promu.yml

@@ -1,7 +1,7 @@
 go:
     # Whenever the Go version is updated here, .travis.yml and
     # .circle/config.yml should also be updated.
-    version: 1.12
+    version: 1.13
 repository:
     path: github.com/prometheus/promu
 build:

go.mod

@@ -2,8 +2,6 @@ module github.com/prometheus/promu
 
 require (
 	github.com/Masterminds/semver v1.4.2
-	github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc // indirect
-	github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf // indirect
 	github.com/google/go-github/v25 v25.0.0
 	github.com/kr/pretty v0.1.0 // indirect
 	github.com/pkg/errors v0.8.1
@@ -13,3 +11,5 @@ require (
 	gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 // indirect
 	gopkg.in/yaml.v2 v2.2.2
 )
+
+go 1.13