Bump cypress from 5.6.0 to 6.6.0

Bumps [cypress](https://github.com/cypress-io/cypress) from 5.6.0 to 6.6.0.
- [Release notes](https://github.com/cypress-io/cypress/releases)
- [Changelog](https://github.com/cypress-io/cypress/blob/develop/.releaserc.base.js)
- [Commits](https://github.com/cypress-io/cypress/compare/@cypress/webpack-preprocessor-v5.6.0...v6.6.0)

Signed-off-by: dependabot[bot] <support@github.com>

package.json

@@ -9,32 +9,32 @@
     "gatsby-image": "^3.0.0",
     "gatsby-plugin-force-trailing-slashes": "^1.0.4",
     "gatsby-plugin-google-gtag": "^2.1.10",
-    "gatsby-plugin-manifest": "^2.4.28",
+    "gatsby-plugin-manifest": "^2.6.1",
     "gatsby-plugin-nprogress": "^2.3.13",
     "gatsby-plugin-offline": "^3.10.2",
     "gatsby-plugin-preload-fonts": "^2.0.0",
     "gatsby-plugin-react-helmet": "^3.10.0",
     "gatsby-plugin-sass": "^2.8.0",
     "gatsby-plugin-sharp": "^2.14.3",
     "gatsby-source-filesystem": "^2.11.1",
-    "gatsby-transformer-sharp": "^2.5.14",
+    "gatsby-transformer-sharp": "^2.12.1",
     "node-sass": "^4.14.1",
     "prop-types": "^15.7.2",
     "react": "^16.12.0",
     "react-dom": "^16.12.0",
     "react-helmet": "^6.0.0",
-    "react-icons": "^3.11.0"
+    "react-icons": "^4.2.0"
   },
   "devDependencies": {
     "@testing-library/cypress": "^7.0.4",
     "chai": "^4.2.0",
     "chrome-launcher": "^0.13.4",
-    "cypress": "^5.6.0",
+    "cypress": "^6.6.0",
     "gatsby-cypress": "^0.4.12",
     "husky": "^4.3.0",
     "lighthouse": "^6.3.0",
     "lighthouse-badges": "^1.0.34",
-    "mocha": "^8.1.3",
+    "mocha": "^8.3.2",
     "prettier": "2.1.1",
     "start-server-and-test": "^1.11.3"
   },