chore(deps): bump @babel/plugin-proposal-decorators (#4904)

Bumps [@babel/plugin-proposal-decorators](https://github.com/babel/babel/tree/HEAD/packages/babel-plugin-proposal-decorators) from 7.18.10 to 7.21.0.
- [Release notes](https://github.com/babel/babel/releases)
- [Changelog](https://github.com/babel/babel/blob/main/CHANGELOG.md)
- [Commits](https://github.com/babel/babel/commits/v7.21.0/packages/babel-plugin-proposal-decorators)

---
updated-dependencies:
- dependency-name: "@babel/plugin-proposal-decorators"
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

package.json

@@ -47,7 +47,7 @@
   ],
   "dependencies": {
     "@babel/core": "^7.18.6",
-    "@babel/plugin-proposal-decorators": "^7.18.10",
+    "@babel/plugin-proposal-decorators": "^7.21.0",
     "@babel/plugin-transform-destructuring": "^7.20.2",
     "@babel/plugin-transform-regenerator": "^7.10.4",
     "@babel/preset-env": "^7.16.0",