Update go module github.com/cloudfoundry/libcfbuildpack@master

Author: cf-buildpacks-eng

go.mod

@@ -4,9 +4,9 @@ go 1.12
 
 require (
 	github.com/Masterminds/semver v1.4.2
-	github.com/buildpack/libbuildpack v1.19.0
+	github.com/buildpack/libbuildpack v1.20.0
 	github.com/cloudfoundry/dagger v0.0.0-20190708210935-79ba5190b629
-	github.com/cloudfoundry/libcfbuildpack v1.76.0
+	github.com/cloudfoundry/libcfbuildpack v1.77.0
 	github.com/golang/mock v1.3.0
 	github.com/onsi/gomega v1.5.0
 	github.com/sclevine/spec v1.2.0

go.sum

@@ -5,10 +5,14 @@ github.com/Masterminds/semver v1.4.2 h1:WBLTQ37jOCzSLtXNdoo8bNM8876KhNqOKvrlGITg
 github.com/Masterminds/semver v1.4.2/go.mod h1:MB6lktGJrhw8PrUyiEoblNEGEQ+RzHPF078ddwwvV3Y=
 github.com/buildpack/libbuildpack v1.19.0 h1:HUkaIwuGmPbQhujBjYNpd+E4f0NdAgAgHq7skydiL5s=
 github.com/buildpack/libbuildpack v1.19.0/go.mod h1:oxgSTzPbWscHs27iuYrctEZpSak2m/qPThA+9JM0Boo=
+github.com/buildpack/libbuildpack v1.20.0 h1:0Jxd8UaZsIjUR/7b2FAyqYYof1Gk5GesuhHKxFKDv4I=
+github.com/buildpack/libbuildpack v1.20.0/go.mod h1:GNN9x3mIGqolLBXj5z1K5kA22WvrC7uU7zYWt0d/GUs=
 github.com/cloudfoundry/dagger v0.0.0-20190708210935-79ba5190b629 h1:Ij34QrApV5nmYopclohIhB3EFFV76faK+7bhNGpkGRs=
 github.com/cloudfoundry/dagger v0.0.0-20190708210935-79ba5190b629/go.mod h1:PXeUHc4d2vAVO/31jFE6uD09w/yFfzs4kcayAVEvnEI=
 github.com/cloudfoundry/libcfbuildpack v1.76.0 h1:oMTv35mjk5Jogzy2sshVXHyolDWnWHMfANQ0UooXJq0=
 github.com/cloudfoundry/libcfbuildpack v1.76.0/go.mod h1:QGm+nzixn579dvQNlS7ZQET541y2hEpZ0/5uNxkQ04Y=
+github.com/cloudfoundry/libcfbuildpack v1.77.0 h1:0efgQEcrRhbzp9vQAwik7HDNqudcqbjJ4qI7rRhEqL8=
+github.com/cloudfoundry/libcfbuildpack v1.77.0/go.mod h1:nqxdAEdvcSYRZqsFL+uV1+coatU1pqz3EyPST4/e8Ls=
 github.com/fatih/color v1.7.0 h1:DkWD4oS2D8LGGgTQ6IvwJJXSL5Vp2ffcQg58nFV38Ys=
 github.com/fatih/color v1.7.0/go.mod h1:Zm6kSWBoL9eyXnKyktHP6abPY2pDugNf5KwzbycvMj4=
 github.com/fsnotify/fsnotify v1.4.7 h1:IXs+QLmnXW2CcXuY+8Mzv/fWEsPGWxqefPtCP5CnV9I=
@@ -18,6 +22,8 @@ github.com/golang/mock v1.3.0/go.mod h1:c8YoAQJ7+qIz9IQm9G72MJ4uDcrPeLjkrQ4yYIHd
 github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
 github.com/golang/protobuf v1.3.1 h1:YF8+flBXS5eO826T4nzqPrxfhQThhXl0YzfuUPu4SBg=
 github.com/golang/protobuf v1.3.1/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
+github.com/golang/protobuf v1.3.2 h1:6nsPYzhq5kReh6QImI3k5qWzO4PEbvbIW2cwSfR/6xs=
+github.com/golang/protobuf v1.3.2/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
 github.com/google/go-github v17.0.0+incompatible h1:N0LgJ1j65A7kfXrZnUDaYCs/Sf4rEjNlfyDHW9dolSY=
 github.com/google/go-github v17.0.0+incompatible/go.mod h1:zLgOLi98H3fifZn+44m+umXrS52loVEgC2AApnigrVQ=
 github.com/google/go-querystring v1.0.0 h1:Xkwi/a1rcvNg1PPYe5vI8GbeBY/jrVuDX5ASuANWTrk=
@@ -73,6 +79,8 @@ golang.org/x/sys v0.0.0-20190425145619-16072639606e h1:4ktJgTV34+N3qOZUc5fAaG3Pb
 golang.org/x/sys v0.0.0-20190425145619-16072639606e/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20190626221950-04f50cda93cb h1:fgwFCsaw9buMuxNd6+DQfAuSFqbNiQZpcgJQAgJsK6k=
 golang.org/x/sys v0.0.0-20190626221950-04f50cda93cb/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20190710143415-6ec70d6a5542 h1:6ZQFf1D2YYDDI7eSwW8adlkkavTB9sw5I24FVtEvNUQ=
+golang.org/x/sys v0.0.0-20190710143415-6ec70d6a5542/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.1 h1:nsUiJHvm6yOoRozW9Tz0siNk9sHieLzR+w814Ihse3A=
 golang.org/x/text v0.3.1/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=