chore(deps): update babel monorepo to v7.21.3 (#656)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

packages/demo/package.json

@@ -7,7 +7,7 @@
     "build": "react-scripts build"
   },
   "dependencies": {
-    "@babel/eslint-parser": "7.19.1",
+    "@babel/eslint-parser": "7.21.3",
     "@staticcms/core": "^1.0.0-beta.12",
     "babel-loader": "9.1.2",
     "react": "18.2.0",
@@ -15,7 +15,7 @@
   },
   "devDependencies": {
     "@babel/cli": "7.21.0",
-    "@babel/core": "7.21.0",
+    "@babel/core": "7.21.3",
     "@babel/plugin-syntax-flow": "7.18.6",
     "@babel/plugin-transform-react-jsx": "7.21.0",
     "copy-webpack-plugin": "11.0.0",