Bump gopkg.in/yaml.v3 in /test/src

Bumps gopkg.in/yaml.v3 from 3.0.0-20200615113413-eeeca48fe776 to 3.0.0.

---
updated-dependencies:
- dependency-name: gopkg.in/yaml.v3
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

test/src/go.mod

@@ -3,12 +3,10 @@ module github.com/cloudposse/terraform-example-module
 go 1.13
 
 require (
-	github.com/gruntwork-io/gruntwork-cli v0.5.1 // indirect
 	github.com/gruntwork-io/terratest v0.32.16
 	github.com/stretchr/testify v1.6.1
 	golang.org/x/crypto v0.0.0-20200820211705-5c72a883971a // indirect
 	golang.org/x/net v0.0.0-20200822124328-c89045814202 // indirect
 	golang.org/x/sys v0.0.0-20200828194041-157a740278f4 // indirect
-	gopkg.in/yaml.v3 v3.0.0-20200615113413-eeeca48fe776 // indirect
-	sigs.k8s.io/structured-merge-diff/v3 v3.0.0 // indirect
+	gopkg.in/yaml.v3 v3.0.0 // indirect
 )