chore(deps): update dependency babel-plugin-istanbul to v7

Author: renovate[bot]

package.json

@@ -32,7 +32,7 @@
   "homepage": "https://github.com/bahmutov/cypress-and-jest#readme",
   "devDependencies": {
     "@cypress/code-coverage": "3.9.12",
-    "babel-plugin-istanbul": "6.1.1",
+    "babel-plugin-istanbul": "7.0.1",
     "check-code-coverage": "1.10.5",
     "cypress": "4.12.1",
     "jest": "24.9.0"