chore(deps): update dependency eslint-plugin-flowtype to v8

Author: pactflow-renovate-bot[bot]

package.json

@@ -53,7 +53,7 @@
     "eslint": "6.8.0",
     "eslint-config-react-app": "7.0.1",
     "eslint-plugin-cypress": "4.2.1",
-    "eslint-plugin-flowtype": "3.13.0",
+    "eslint-plugin-flowtype": "8.0.3",
     "eslint-plugin-import": "2.31.0",
     "eslint-plugin-jsx-a11y": "6.10.2",
     "eslint-plugin-react": "7.37.5",