Update dependency react to v17

Author: renovate-bot

site/package.json

@@ -11,7 +11,7 @@
     "dotenv": "8.2.0",
     "gatsby": "2.22.12",
     "gatsby-image": "2.4.5",
-    "react": "16.13.0",
+    "react": "17.0.0",
     "react-dom": "16.13.0"
   },
   "homepage": "https://github.com/rshackleton/gatsby-packages/tree/master/packages/site#readme",

yarn.lock

@@ -14897,7 +14897,15 @@ react-refresh@^0.7.0:
   resolved "https://registry.yarnpkg.com/react-refresh/-/react-refresh-0.7.2.tgz#f30978d21eb8cac6e2f2fde056a7d04f6844dd50"
   integrity sha512-u5l7fhAJXecWUJzVxzMRU2Zvw8m4QmDNHlTrT5uo3KBlYBhmChd7syAakBoay1yIiVhx/8Fi7a6v6kQZfsw81Q==
 
-react@16.13.0, react@^16.8.0:
+react@17.0.0:
+  version "17.0.0"
+  resolved "https://registry.yarnpkg.com/react/-/react-17.0.0.tgz#ad96d5fa1a33bb9b06d0cc52672f7992d84aa662"
+  integrity sha512-rG9bqS3LMuetoSUKHN8G3fMNuQOePKDThK6+2yXFWtoeTDLVNh/QCaxT+Jr+rNf4lwNXpx+atdn3Aa0oi8/6eQ==
+  dependencies:
+    loose-envify "^1.1.0"
+    object-assign "^4.1.1"
+
+react@^16.8.0:
   version "16.13.0"
   resolved "https://registry.yarnpkg.com/react/-/react-16.13.0.tgz#d046eabcdf64e457bbeed1e792e235e1b9934cf7"
   integrity sha512-TSavZz2iSLkq5/oiE7gnFzmURKZMltmi193rm5HEoUDAXpzT9Kzw6oNZnGoai/4+fUnm7FqS5dwgUL34TujcWQ==