Bump github.com/mackerelio/mackerel-client-go from 0.27.0 to 0.28.0

Bumps [github.com/mackerelio/mackerel-client-go](https://github.com/mackerelio/mackerel-client-go) from 0.27.0 to 0.28.0.
- [Release notes](https://github.com/mackerelio/mackerel-client-go/releases)
- [Commits](mackerelio/mackerel-client-go@v0.27.0...v0.28.0)

---
updated-dependencies:
- dependency-name: github.com/mackerelio/mackerel-client-go
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

go.mod

@@ -5,7 +5,7 @@ go 1.21
 require (
 	github.com/aws/aws-lambda-go v1.41.0
 	github.com/aws/aws-sdk-go v1.48.16
-	github.com/mackerelio/mackerel-client-go v0.27.0
+	github.com/mackerelio/mackerel-client-go v0.28.0
 	github.com/stretchr/testify v1.8.4
 	github.com/urfave/cli/v2 v2.26.0
 	gopkg.in/yaml.v3 v3.0.1

go.sum

@@ -13,8 +13,8 @@ github.com/jmespath/go-jmespath/internal/testify v1.5.1 h1:shLQSRRSCCPj3f2gpwzGw
 github.com/jmespath/go-jmespath/internal/testify v1.5.1/go.mod h1:L3OGu8Wl2/fWfCI6z80xFu9LTZmf1ZRjMHUOPmWr69U=
 github.com/kylelemons/godebug v1.1.0 h1:RPNrshWIDI6G2gRW9EHilWtl7Z6Sb1BR0xunSBf0SNc=
 github.com/kylelemons/godebug v1.1.0/go.mod h1:9/0rRGxNHcop5bhtWyNeEfOS8JIWk580+fNqagV/RAw=
-github.com/mackerelio/mackerel-client-go v0.27.0 h1:3+8IY7eEwtdlA/APlelENopE0t3n6Ecw+74VUCzvE/w=
-github.com/mackerelio/mackerel-client-go v0.27.0/go.mod h1:b4qVMQi+w4rxtKQIFycLWXNBtIi9d0r571RzYmg/aXo=
+github.com/mackerelio/mackerel-client-go v0.28.0 h1:wVkpKVfTd5koR0TP4a8jlaYjn5rhkbr7utbF8a1+Wyo=
+github.com/mackerelio/mackerel-client-go v0.28.0/go.mod h1:b4qVMQi+w4rxtKQIFycLWXNBtIi9d0r571RzYmg/aXo=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/russross/blackfriday/v2 v2.1.0 h1:JIOH55/0cWyOuilr9/qlrm0BSXldqnqwMsf35Ld67mk=