Bump github.com/stretchr/testify from 1.8.2 to 1.8.4 (#605)

Bumps [github.com/stretchr/testify](https://github.com/stretchr/testify) from 1.8.2 to 1.8.4.
- [Release notes](https://github.com/stretchr/testify/releases)
- [Commits](stretchr/testify@v1.8.2...v1.8.4)

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

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

go.mod

@@ -11,7 +11,7 @@ require (
 	github.com/mweagle/go-cloudformation v0.0.0-20211009163201-0a35d7d0fa70
 	github.com/prometheus/client_golang v1.14.0
 	github.com/sirupsen/logrus v1.9.0
-	github.com/stretchr/testify v1.8.2
+	github.com/stretchr/testify v1.8.4
 	github.com/zalando/skipper v0.16.6
 	gopkg.in/alecthomas/kingpin.v2 v2.2.6
 	k8s.io/api v0.22.17

go.sum

@@ -328,8 +328,9 @@ github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/
 github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
 github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
 github.com/stretchr/testify v1.8.1/go.mod h1:w2LPCIKwWwSfY2zedu0+kehJoqGctiVI29o6fzry7u4=
-github.com/stretchr/testify v1.8.2 h1:+h33VjcLVPDHtOdpUCuF+7gSuG3yGIftsP1YvFihtJ8=
 github.com/stretchr/testify v1.8.2/go.mod h1:w2LPCIKwWwSfY2zedu0+kehJoqGctiVI29o6fzry7u4=
+github.com/stretchr/testify v1.8.4 h1:CcVxjf3Q8PM0mHUKJCdn+eZZtm5yQwehR5yeSVQQcUk=
+github.com/stretchr/testify v1.8.4/go.mod h1:sz/lmYIOXD/1dqDmKjjqLyZ2RngseejIcXlSw2iwfAo=
 github.com/syndtr/gocapability v0.0.0-20200815063812-42c35b437635/go.mod h1:hkRG7XYTFWNJGYcbNJQlaLq0fg1yr4J4t/NcTQtrfww=
 github.com/szuecs/rate-limit-buffer v0.9.0 h1:65fBCVsaJFh0E1G5C6/sInEPlYR6dXtF9J9bAv48lLg=
 github.com/szuecs/redis/v9 v9.0.0-beta.1.0.20220801200609-6f7f800107ba h1:XbMix18lOs+rRJwTaqnN6pmMc8z2kRLvFOfON9fFTA8=