Bump @babel/plugin-proposal-decorators in /powerauth-webflow

Bumps [@babel/plugin-proposal-decorators](https://github.com/babel/babel/tree/HEAD/packages/babel-plugin-proposal-decorators) from 7.20.7 to 7.22.15.
- [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/v7.22.15/packages/babel-plugin-proposal-decorators)

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

Signed-off-by: dependabot[bot] <[email protected]>