Bump github.com/buildpacks/libcnb from 1.18.0 to 1.18.1

Bumps [github.com/buildpacks/libcnb](https://github.com/buildpacks/libcnb) from 1.18.0 to 1.18.1.
- [Release notes](https://github.com/buildpacks/libcnb/releases)
- [Commits](buildpacks/libcnb@v1.18.0...v1.18.1)

Signed-off-by: dependabot[bot] <support@github.com>

go.mod

@@ -3,7 +3,7 @@ module github.com/paketo-buildpacks/dist-zip
 go 1.15
 
 require (
-	github.com/buildpacks/libcnb v1.18.0
+	github.com/buildpacks/libcnb v1.18.1
 	github.com/onsi/gomega v1.10.3
 	github.com/paketo-buildpacks/libpak v1.49.0
 	github.com/sclevine/spec v1.4.0

go.sum

@@ -4,6 +4,8 @@ github.com/Masterminds/semver/v3 v3.1.0 h1:Y2lUDsFKVRSYGojLJ1yLxSXdMmMYTYls0rCvo
 github.com/Masterminds/semver/v3 v3.1.0/go.mod h1:VPu/7SZ7ePZ3QOrcuXROw5FAcLl4a0cBrbBpGY/8hQs=
 github.com/buildpacks/libcnb v1.18.0 h1:Q7I+HjQ1Cq02/AqhTOrzecuNESip9xE2axckxnymYLQ=
 github.com/buildpacks/libcnb v1.18.0/go.mod h1:yzAQd//jyUXVx6Z/F0cKk/hrl49QZq1OE/hP5+/ZPuQ=
+github.com/buildpacks/libcnb v1.18.1 h1:NcAqtyLmSkpcgIOl83GOHY5Mk2ltBFiAI8mmAvavvEs=
+github.com/buildpacks/libcnb v1.18.1/go.mod h1:ozKZYold67tlck+1cobg11YhGmJqkQr8bMAH5gSvEvw=
 github.com/creack/pty v1.1.11/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
 github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=