Bump golang.org/x/text from 0.3.6 to 0.3.8 in /test/integration#4

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dependabot/go_modules/test/integration/golang.org/x/text-0.3.8GoogleCloudPlatform/terraform-google-billing-dashboard:dependabot/go_modules/test/integration/golang.org/x/text-0.3.8Copy head branch name to clipboard