Bump github.com/elastic/beats from 5.6.2+incompatible to 5.6.4+incompatible#13

dependabot[bot] wants to merge 1 commit intomasterindeedsecurity/carbonbeat:masterfrom

dependabot/go_modules/github.com/elastic/beats-5.6.4incompatibleindeedsecurity/carbonbeat:dependabot/go_modules/github.com/elastic/beats-5.6.4incompatibleCopy head branch name to clipboard