Bump github.com/go-spectest/spectest in /examples/plantuml

Bumps [github.com/go-spectest/spectest](https://github.com/go-spectest/spectest) from 0.0.15 to 0.0.18.
- [Release notes](https://github.com/go-spectest/spectest/releases)
- [Changelog](https://github.com/go-spectest/spectest/blob/main/CHANGELOG.md)
- [Commits](v0.0.15...v0.0.18)

---
updated-dependencies:
- dependency-name: github.com/go-spectest/spectest
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

examples/plantuml/go.mod

@@ -3,14 +3,14 @@ module github.com/go-spectest/spectest-examples/plantuml
 go 1.18
 
 require (
-	github.com/go-spectest/spectest v0.0.15
+	github.com/go-spectest/spectest v0.0.18
 	github.com/gorilla/mux v1.8.1
 )
 
 require (
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/go-spectest/diff v0.0.0-20231006143314-ce490574d4a9 // indirect
-	github.com/go-spectest/markdown v0.0.6 // indirect
+	github.com/go-spectest/markdown v0.0.7 // indirect
 	github.com/go-spectest/mermaid v0.0.1 // indirect
 	github.com/karrick/godirwalk v1.17.0 // indirect
 	github.com/mattn/go-runewidth v0.0.14 // indirect

examples/plantuml/go.sum

@@ -2,12 +2,12 @@ github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/go-spectest/diff v0.0.0-20231006143314-ce490574d4a9 h1:I05FIUaZLNe9Jo6ZCvODDGBqHMk3TYd7V/wV9dZhwXk=
 github.com/go-spectest/diff v0.0.0-20231006143314-ce490574d4a9/go.mod h1:wWRXl4ClWLDIPkL/lS8SSxojHRg1cGngvPcya/mYhf0=
-github.com/go-spectest/markdown v0.0.6 h1:S1KBMTYLwaF+gscqdG2XU4ne0axqAWDuFuGrOOv2a80=
-github.com/go-spectest/markdown v0.0.6/go.mod h1:OaFedfVlu5+eqe5tI2j3+LD/39T7k5JZAklxTul98EQ=
+github.com/go-spectest/markdown v0.0.7 h1:Pr+A/YBCtEruReeMMzBKQ4ftvNtlWuaiWRqgNaETA8Q=
+github.com/go-spectest/markdown v0.0.7/go.mod h1:OaFedfVlu5+eqe5tI2j3+LD/39T7k5JZAklxTul98EQ=
 github.com/go-spectest/mermaid v0.0.1 h1:Mi4dxGbdW1swgOqsUaSNQaKHO/mgO7Afk0Qwt4ASa2Y=
 github.com/go-spectest/mermaid v0.0.1/go.mod h1:S3YmRsGuV/EsSadoMn1C/XHr8+aXZ33UON8nuD+xi3w=
-github.com/go-spectest/spectest v0.0.15 h1:eSKPVVjnD+gNYOxZ8vfV3B7gR/e3yi6/kc9lqQddNFs=
-github.com/go-spectest/spectest v0.0.15/go.mod h1:fgAZM8EeVPEE5/dIS0AHY9SPzy5IYVu+ZxLZXstqA1U=
+github.com/go-spectest/spectest v0.0.18 h1:ni/m9HQJpnt2OhOMk0iKwR3PcxVVm57bycvCePJj+Uk=
+github.com/go-spectest/spectest v0.0.18/go.mod h1:uJr62Wbe6+vJ4xepfId8aodSOulwOl6Y1ikRJbKhWdE=
 github.com/google/go-cmp v0.6.0 h1:ofyhxvXcZhMsU5ulbFiLKl/XBFqE1GSq7atu8tAmTRI=
 github.com/gorilla/mux v1.8.1 h1:TuBL49tXwgrFYWhqrNgrUNEY92u81SPhu7sTdzQEiWY=
 github.com/gorilla/mux v1.8.1/go.mod h1:AKf9I4AEqPTmMytcMc0KkNouC66V3BtZ4qD5fmWSiMQ=