Updated badges

Author: renovate[bot]

README.md

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 # cypress-markdown-preprocessor
-[![ci status][ci image]][ci url] [![badges status][badges image]][badges url] [![renovate-app badge][renovate-badge]][renovate-app] ![cypress version](https://img.shields.io/badge/cypress-6.3.0-brightgreen) ![@cypress/fiddle version](https://img.shields.io/badge/@cypress/fiddle-1.19.0-brightgreen)
+[![ci status][ci image]][ci url] [![badges status][badges image]][badges url] [![renovate-app badge][renovate-badge]][renovate-app] ![cypress version](https://img.shields.io/badge/cypress-6.4.0-brightgreen) ![@cypress/fiddle version](https://img.shields.io/badge/@cypress/fiddle-1.19.0-brightgreen)
 > Use Markdown files as Cypress specs
 
 ## Install