fix: upgrade multiple dependencies with Snyk

Snyk has created this PR to upgrade:
  - slate from 0.82.1 to 0.103.0.
    See this package in npm: https://www.npmjs.com/package/slate
  - slate-history from 0.66.0 to 0.109.0.
    See this package in npm: https://www.npmjs.com/package/slate-history
  - slate-react from 0.82.2 to 0.109.0.
    See this package in npm: https://www.npmjs.com/package/slate-react

See this project in Snyk:
https://app.snyk.io/org/sammyfilly/project/6df6bc44-2514-430b-96bd-b8845a4280c5?utm_source=github&utm_medium=referral&page=upgrade-pr

examples/with-slate/package.json

@@ -9,9 +9,9 @@
     "next": "latest",
     "react": "^18.2.0",
     "react-dom": "^18.2.0",
-    "slate": "^0.82.0",
-    "slate-history": "0.66.0",
-    "slate-react": "^0.82.0"
+    "slate": "^0.103.0",
+    "slate-history": "0.109.0",
+    "slate-react": "^0.109.0"
   },
   "devDependencies": {
     "@types/node": "18.7.5",