chore(deps): update gatsby to v3.10.0

Author: renovate-bot

package.json

@@ -70,7 +70,7 @@
     "eslint-plugin-prettier": "3.4.0",
     "eslint-plugin-react": "7.24.0",
     "eslint-plugin-react-hooks": "4.2.0",
-    "gatsby": "3.9.1",
+    "gatsby": "3.10.0",
     "husky": "4.3.8",
     "jest": "26.6.3",
     "jest-dom": "4.0.0",