Bump @babel/core from 7.18.2 to 7.18.6 in /src/pretix/static/npm_dir

Bumps [@babel/core](https://github.com/babel/babel/tree/HEAD/packages/babel-core) from 7.18.2 to 7.18.6.
- [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/v7.18.6/packages/babel-core)

---
updated-dependencies:
- dependency-name: "@babel/core"
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

src/pretix/static/npm_dir/package.json

@@ -4,7 +4,7 @@
   "private": true,
   "scripts": {},
   "dependencies": {
-    "@babel/core": "^7.18.2",
+    "@babel/core": "^7.18.6",
     "@babel/preset-env": "^7.18.6",
     "@rollup/plugin-babel": "^5.3.1",
     "@rollup/plugin-node-resolve": "^13.3.0",