Bump github.com/google/go-cmp from 0.4.0 to 0.5.0 (#36)

Bumps [github.com/google/go-cmp](https://github.com/google/go-cmp) from 0.4.0 to 0.5.0.
- [Release notes](https://github.com/google/go-cmp/releases)
- [Commits](google/go-cmp@v0.4.0...v0.5.0)

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Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

Author: dependabot-preview[bot]

go.mod

@@ -1,7 +1,7 @@
 module github.com/int128/oauth2cli
 
 require (
-	github.com/google/go-cmp v0.4.0
+	github.com/google/go-cmp v0.5.0
 	github.com/int128/listener v1.1.0
 	github.com/pkg/browser v0.0.0-20180916011732-0a3d74bf9ce4
 	golang.org/x/oauth2 v0.0.0-20200107190931-bf48bf16ab8d

go.sum

@@ -4,6 +4,8 @@ github.com/golang/protobuf v1.2.0 h1:P3YflyNX/ehuJFLhxviNdFxQPkGK5cDcApsge1SqnvM
 github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
 github.com/google/go-cmp v0.4.0 h1:xsAVV57WRhGj6kEIi8ReJzQlHHqcBYCElAvkovg3B/4=
 github.com/google/go-cmp v0.4.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
+github.com/google/go-cmp v0.5.0 h1:/QaMHBdZ26BB3SSst0Iwl10Epc+xhTquomWX0oZEB6w=
+github.com/google/go-cmp v0.5.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/int128/listener v1.1.0 h1:2Jb41DWLpkQ3I9bIdBzO8H/tNwMvyl/OBZWtCV5Pjuw=
 github.com/int128/listener v1.1.0/go.mod h1:68WkmTN8PQtLzc9DucIaagAKeGVyMnyyKIkW4Xn47UA=
 github.com/pkg/browser v0.0.0-20180916011732-0a3d74bf9ce4 h1:49lOXmGaUpV9Fz3gd7TFZY106KVlPVa5jcYD1gaQf98=