Bump github.com/slack-go/slack from 0.12.2 to 0.12.3

Bumps [github.com/slack-go/slack](https://github.com/slack-go/slack) from 0.12.2 to 0.12.3.
- [Release notes](https://github.com/slack-go/slack/releases)
- [Changelog](https://github.com/slack-go/slack/blob/master/CHANGELOG.md)
- [Commits](slack-go/slack@v0.12.2...v0.12.3)

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

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

go.mod

@@ -12,7 +12,7 @@ require (
 	github.com/pandatix/gocket-chat v0.1.0-alpha
 	github.com/proclaim/mock-slack v0.0.0-20201019114328-0aae156a5005
 	github.com/sirupsen/logrus v1.9.3
-	github.com/slack-go/slack v0.12.2
+	github.com/slack-go/slack v0.12.3
 	github.com/spf13/cobra v1.7.0
 	github.com/spf13/viper v1.16.0
 	github.com/stretchr/testify v1.8.4

go.sum

@@ -224,8 +224,8 @@ github.com/rogpeppe/go-internal v1.9.0 h1:73kH8U+JUqXU8lRuOHeVHaa/SZPifC7BkcraZV
 github.com/russross/blackfriday/v2 v2.1.0/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
 github.com/sirupsen/logrus v1.9.3 h1:dueUQJ1C2q9oE3F7wvmSGAaVtTmUizReu6fjN8uqzbQ=
 github.com/sirupsen/logrus v1.9.3/go.mod h1:naHLuLoDiP4jHNo9R0sCBMtWGeIprob74mVsIT4qYEQ=
-github.com/slack-go/slack v0.12.2 h1:x3OppyMyGIbbiyFhsBmpf9pwkUzMhthJMRNmNlA4LaQ=
-github.com/slack-go/slack v0.12.2/go.mod h1:hlGi5oXA+Gt+yWTPP0plCdRKmjsDxecdHxYQdlMQKOw=
+github.com/slack-go/slack v0.12.3 h1:92/dfFU8Q5XP6Wp5rr5/T5JHLM5c5Smtn53fhToAP88=
+github.com/slack-go/slack v0.12.3/go.mod h1:hlGi5oXA+Gt+yWTPP0plCdRKmjsDxecdHxYQdlMQKOw=
 github.com/spf13/afero v1.9.5 h1:stMpOSZFs//0Lv29HduCmli3GUfpFoF3Y1Q/aXj/wVM=
 github.com/spf13/afero v1.9.5/go.mod h1:UBogFpq8E9Hx+xc5CNTTEpTnuHVmXDwZcZcE1eb/UhQ=
 github.com/spf13/cast v1.5.1 h1:R+kOtfhWQE6TVQzY+4D7wJLBgkdVasCEFxSUBYBYIlA=