Bump github.com/heroku/x from 0.0.25 to 0.0.28

Bumps [github.com/heroku/x](https://github.com/heroku/x) from 0.0.25 to 0.0.28.
- [Release notes](https://github.com/heroku/x/releases)
- [Commits](https://github.com/heroku/x/compare/v0.0.25...v0.0.28)

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

go.mod

@@ -18,7 +18,7 @@ require (
 	github.com/gobwas/glob v0.2.3 // indirect
 	github.com/gocolly/colly v1.2.0
 	github.com/golang/protobuf v1.4.2 // indirect
-	github.com/heroku/x v0.0.25
+	github.com/heroku/x v0.0.28
 	github.com/ivpusic/grpool v1.0.0
 	github.com/jackc/pgproto3/v2 v2.0.4 // indirect
 	github.com/jasonlvhit/gocron v0.0.1

go.sum

@@ -122,8 +122,8 @@ github.com/grpc-ecosystem/grpc-gateway v1.9.6/go.mod h1:vNeuVxBJEsws4ogUvrchl83t
 github.com/hashicorp/golang-lru v0.5.0/go.mod h1:/m3WP610KZHVQ1SGc6re/UDhFvYD7pJ4Ao+sR/qLZy8=
 github.com/hashicorp/golang-lru v0.5.1/go.mod h1:/m3WP610KZHVQ1SGc6re/UDhFvYD7pJ4Ao+sR/qLZy8=
 github.com/heroku/rollrus v0.2.0/go.mod h1:B3MwEcr9nmf4xj0Sr5l9eSht7wLKMa1C+9ajgAU79ek=
-github.com/heroku/x v0.0.25 h1:6/2rENs6rfUds9jOxy9oO59b0fiOx/FeTCGOyLMXcZw=
-github.com/heroku/x v0.0.25/go.mod h1:qE/I0jp6rIeTBBosrPYV4ygRX3OMhqmC/A6x8ewodJQ=
+github.com/heroku/x v0.0.28 h1:JVGnjJSigzkBfUxLB5TViMPRbcPRv9LkllK7WL/V+fU=
+github.com/heroku/x v0.0.28/go.mod h1:qE/I0jp6rIeTBBosrPYV4ygRX3OMhqmC/A6x8ewodJQ=
 github.com/hpcloud/tail v1.0.0/go.mod h1:ab1qPbhIpdTxEkNHXyeSf5vhxWSCs/tWer42PpOxQnU=
 github.com/hydrogen18/memlistener v0.0.0-20141126152155-54553eb933fb/go.mod h1:qEIFzExnS6016fRpRfxrExeVn2gbClQA99gQhnIcdhE=
 github.com/inconshreveable/mousetrap v1.0.0/go.mod h1:PxqpIevigyE2G7u3NXJIT2ANytuPF1OarO4DADm73n8=