Bump github.com/dave/jennifer

Bumps [github.com/dave/jennifer](https://github.com/dave/jennifer) from 0.0.0-20171207062344-d8bdbdbee4e1 to 1.7.1.
- [Commits](https://github.com/dave/jennifer/commits/v1.7.1)

---
updated-dependencies:
- dependency-name: github.com/dave/jennifer
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

go.mod

@@ -7,7 +7,7 @@ require (
 	github.com/ash2k/stager v0.0.0-20170622123058-6e9c7b0eacd4 // indirect
 	github.com/atlassian/gostatsd v0.0.0-20180514010436-af796620006e
 	github.com/blang/semver/v4 v4.0.0
-	github.com/dave/jennifer v0.0.0-20171207062344-d8bdbdbee4e1
+	github.com/dave/jennifer v1.7.1
 	github.com/dustin/go-humanize v1.0.1
 	github.com/echlebek/crock v1.0.1
 	github.com/echlebek/timeproxy v1.0.0

go.sum

@@ -1118,8 +1118,8 @@ github.com/creack/pty v1.1.7/go.mod h1:lj5s0c3V2DBrqTV7llrYr5NG6My20zk30Fl46Y7Do
 github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
 github.com/creack/pty v1.1.20 h1:VIPb/a2s17qNeQgDnkfZC35RScx+blkKF8GV68n80J4=
 github.com/creack/pty v1.1.20/go.mod h1:MOBLtS5ELjhRRrroQr9kyvTxUAFNvYEK993ew/Vr4O4=
-github.com/dave/jennifer v0.0.0-20171207062344-d8bdbdbee4e1 h1:mbMd//7aY7CL51mT/YZ5DJ4yZYA/E4ZKVSgCh5yN7yU=
-github.com/dave/jennifer v0.0.0-20171207062344-d8bdbdbee4e1/go.mod h1:fIb+770HOpJ2fmN9EPPKOqm1vMGhB+TwXKMZhrIygKg=
+github.com/dave/jennifer v1.7.1 h1:B4jJJDHelWcDhlRQxWeo0Npa/pYKBLrirAQoTN45txo=
+github.com/dave/jennifer v1.7.1/go.mod h1:nXbxhEmQfOZhWml3D1cDK5M1FLnMSozpbFN/m3RmGZc=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=