build(deps): bump github.com/heroku/x from 0.4.1 to 0.4.3

Bumps [github.com/heroku/x](https://github.com/heroku/x) from 0.4.1 to 0.4.3.
- [Release notes](https://github.com/heroku/x/releases)
- [Commits](heroku/x@v0.4.1...v0.4.3)

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

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

Author: dependabot[bot]

go.mod

@@ -10,7 +10,7 @@ require (
 	github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da
 	github.com/google/go-github/v53 v53.2.0
 	github.com/hashicorp/go-version v1.7.0
-	github.com/heroku/x v0.4.1
+	github.com/heroku/x v0.4.3
 	github.com/jekyll/dashboard v1.1.0
 	github.com/parkr/changelog v1.5.0
 	github.com/parkr/githubapi v0.1.0

go.sum

@@ -28,8 +28,8 @@ github.com/google/go-querystring v1.1.0 h1:AnCroh3fv4ZBgVIf1Iwtovgjaw/GiKJo8M8yD
 github.com/google/go-querystring v1.1.0/go.mod h1:Kcdr2DB4koayq7X8pmAG4sNG59So17icRSOU623lUBU=
 github.com/hashicorp/go-version v1.7.0 h1:5tqGy27NaOTB8yJKUZELlFAS/LTKJkrmONwQKeRZfjY=
 github.com/hashicorp/go-version v1.7.0/go.mod h1:fltr4n8CU8Ke44wwGCBoEymUuxUHl09ZGVZPK5anwXA=
-github.com/heroku/x v0.4.1 h1:pndIhWqkqQ1e3qnpPz8+I7hNW5Yoge4llpOenhIJSm0=
-github.com/heroku/x v0.4.1/go.mod h1:3Ji2zMA37qO4BK/4yzXvjlDIUdeXJvArUm2PB0ZEW5g=
+github.com/heroku/x v0.4.3 h1:HF1P4Mu79BKDVk4pt+oRDpcOSTRTpHq28RYAOkuJmds=
+github.com/heroku/x v0.4.3/go.mod h1:htQnSDQPP7rNbrOQ8rczL7tbdNtQHXCPoSxYomu+eI8=
 github.com/jekyll/dashboard v1.1.0 h1:cVPqHCbaO0sFBGqQXB5m2b5CHWbBIwodbk6wbQN+6eY=
 github.com/jekyll/dashboard v1.1.0/go.mod h1:R4KRiDk4ndMrt4UGPTReKLNv9SetYoixrf8Y+9N2nw4=
 github.com/parkr/changelog v1.5.0 h1:0alBbyDk+O2FDCUmTzvKtJwOg0dG2Z4/VulZGPsPmIE=