Bump engine.io and karma in /editor#504

dependabot[bot] wants to merge 1 commit intomasterberta-cms/berta:masterfrom

dependabot/npm_and_yarn/editor/engine.io-and-karma-6.4.1berta-cms/berta:dependabot/npm_and_yarn/editor/engine.io-and-karma-6.4.1Copy head branch name to clipboard