Update module github.com/gruntwork-io/terratest to v0.46.12

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

Author: renovate[bot]

go.mod

@@ -3,7 +3,7 @@ module github.com/appuio/charts
 go 1.18
 
 require (
-	github.com/gruntwork-io/terratest v0.40.7
+	github.com/gruntwork-io/terratest v0.46.12
 	github.com/norwoodj/helm-docs v1.9.1
 	github.com/stretchr/testify v1.7.2
 	k8s.io/api v0.20.6