Bump github.com/hashicorp/consul/api from 1.7.0 to 1.8.1 (#166)

Bumps [github.com/hashicorp/consul/api](https://github.com/hashicorp/consul) from 1.7.0 to 1.8.1.
- [Release notes](https://github.com/hashicorp/consul/releases)
- [Changelog](https://github.com/hashicorp/consul/blob/master/CHANGELOG.md)
- [Commits](hashicorp/consul@v1.7.0...v1.8.1)

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

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

go.mod

@@ -4,14 +4,13 @@ require (
 	github.com/armon/go-metrics v0.3.4 // indirect
 	github.com/fsnotify/fsnotify v1.4.7 // indirect
 	github.com/google/btree v1.0.0 // indirect
-	github.com/hashicorp/consul/api v1.7.0
+	github.com/hashicorp/consul/api v1.8.1
 	github.com/hashicorp/go-immutable-radix v1.2.0 // indirect
 	github.com/hashicorp/go-msgpack v0.5.5 // indirect
 	github.com/hashicorp/go-sockaddr v1.0.2 // indirect
 	github.com/hashicorp/go-uuid v1.0.2 // indirect
 	github.com/hashicorp/golang-lru v0.5.4 // indirect
 	github.com/hashicorp/hcl v1.0.0
-	github.com/hashicorp/serf v0.9.4 // indirect
 	github.com/hpcloud/tail v1.0.0
 	github.com/mitchellh/go-testing-interface v1.14.0 // indirect
 	github.com/mitchellh/mapstructure v1.3.3 // indirect

go.sum

@@ -125,9 +125,11 @@ github.com/grpc-ecosystem/grpc-gateway v1.9.5/go.mod h1:vNeuVxBJEsws4ogUvrchl83t
 github.com/hashicorp/consul/api v1.3.0/go.mod h1:MmDNSzIMUjNpY/mQ398R4bk2FnqQLoPndWW5VkKPlCE=
 github.com/hashicorp/consul/api v1.7.0 h1:tGs8Oep67r8CcA2Ycmb/8BLBcJ70St44mF2X10a/qPg=
 github.com/hashicorp/consul/api v1.7.0/go.mod h1:1NSuaUUkFaJzMasbfq/11wKYWSR67Xn6r2DXKhuDNFg=
+github.com/hashicorp/consul/api v1.8.1/go.mod h1:sDjTOq0yUyv5G4h+BqSea7Fn6BU+XbolEz1952UB+mk=
 github.com/hashicorp/consul/sdk v0.3.0/go.mod h1:VKf9jXwCTEY1QZP2MOLRhb5i/I/ssyNV1vwHyQBF0x8=
 github.com/hashicorp/consul/sdk v0.6.0 h1:FfhMEkwvQl57CildXJyGHnwGGM4HMODGyfjGwNM1Vdw=
 github.com/hashicorp/consul/sdk v0.6.0/go.mod h1:fY08Y9z5SvJqevyZNy6WWPXiG3KwBPAvlcdx16zZ0fM=
+github.com/hashicorp/consul/sdk v0.7.0/go.mod h1:fY08Y9z5SvJqevyZNy6WWPXiG3KwBPAvlcdx16zZ0fM=
 github.com/hashicorp/errwrap v1.0.0 h1:hLrqtEDnRye3+sgx6z4qVLNuviH3MR5aQ0ykNJa/UYA=
 github.com/hashicorp/errwrap v1.0.0/go.mod h1:YH+1FKiLXxHSkmPseP+kNlulaMuP3n2brvKWEqk/Jc4=
 github.com/hashicorp/go-cleanhttp v0.5.0/go.mod h1:JpRdi6/HCYpAwUzNwuwqhbovhLtngrth3wmdIIUrZ80=
@@ -177,6 +179,7 @@ github.com/hashicorp/serf v0.8.2/go.mod h1:6hOLApaqBFA1NXqRQAsxw9QxuDEvNxSQRwA/J
 github.com/hashicorp/serf v0.9.3/go.mod h1:UWDWwZeL5cuWDJdl0C6wrvrUwEqtQ4ZKBKKENpqIUyk=
 github.com/hashicorp/serf v0.9.4 h1:xrZ4ZR0wT5Dz8oQHHdfOzr0ei1jMToWlFFz3hh/DI7I=
 github.com/hashicorp/serf v0.9.4/go.mod h1:UWDWwZeL5cuWDJdl0C6wrvrUwEqtQ4ZKBKKENpqIUyk=
+github.com/hashicorp/serf v0.9.5/go.mod h1:UWDWwZeL5cuWDJdl0C6wrvrUwEqtQ4ZKBKKENpqIUyk=
 github.com/hpcloud/tail v1.0.0 h1:nfCOvKYfkgYP8hkirhJocXT2+zOD8yUNjXaWfTlyFKI=
 github.com/hpcloud/tail v1.0.0/go.mod h1:ab1qPbhIpdTxEkNHXyeSf5vhxWSCs/tWer42PpOxQnU=
 github.com/hudl/fargo v1.3.0/go.mod h1:y3CKSmjA+wD2gak7sUSXTAoopbhU08POFhmITJgmKTg=