Update module github.com/stretchr/testify to v1.8.4

Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

go.mod

@@ -7,7 +7,7 @@ require (
 	github.com/fsnotify/fsnotify v1.6.0
 	github.com/go-logr/logr v1.2.4
 	github.com/pterm/pterm v0.12.57
-	github.com/stretchr/testify v1.8.3
+	github.com/stretchr/testify v1.8.4
 	github.com/urfave/cli/v2 v2.25.2
 	gopkg.in/yaml.v3 v3.0.1
 )

go.sum

@@ -81,8 +81,8 @@ 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 v1.8.3 h1:RP3t2pwF7cMEbC1dqtB6poj3niw/9gnV4Cjg5oW5gtY=
-github.com/stretchr/testify v1.8.3/go.mod h1:sz/lmYIOXD/1dqDmKjjqLyZ2RngseejIcXlSw2iwfAo=
+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/urfave/cli/v2 v2.25.2 h1:rgeK7wmjwH+d3DqXDDSV20GZAvNzmzu/VEsg1om3Qwg=
 github.com/urfave/cli/v2 v2.25.2/go.mod h1:GHupkWPMM0M/sj1a2b4wUrWBPzazNrIjouW6fmdJLxc=
 github.com/xo/terminfo v0.0.0-20210125001918-ca9a967f8778/go.mod h1:2MuV+tbUrU1zIOPMxZ5EncGwgmMJsa+9ucAQZXxsObs=