Bump vue and vue-template-compiler in /src/pretix/static/npm_dir (#3679)

Bumps [vue](https://github.com/vuejs/core) and [vue-template-compiler](https://github.com/vuejs/vue). These dependencies needed to be updated together.

Updates `vue` from 2.7.14 to 2.7.15
- [Release notes](https://github.com/vuejs/core/releases)
- [Changelog](https://github.com/vuejs/core/blob/main/CHANGELOG.md)
- [Commits](https://github.com/vuejs/core/commits)

Updates `vue-template-compiler` from 2.7.14 to 2.7.15
- [Release notes](https://github.com/vuejs/vue/releases)
- [Changelog](https://github.com/vuejs/vue/blob/main/CHANGELOG.md)
- [Commits](https://github.com/vuejs/vue/compare/v2.7.14...v2.7.15)

---
updated-dependencies:
- dependency-name: vue
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: vue-template-compiler
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

src/pretix/static/npm_dir/package.json

@@ -8,9 +8,9 @@
     "@babel/preset-env": "^7.23.2",
     "@rollup/plugin-babel": "^6.0.4",
     "@rollup/plugin-node-resolve": "^15.2.3",
-    "vue": "^2.7.14",
+    "vue": "^2.7.15",
     "rollup": "^2.79.1",
     "rollup-plugin-vue": "^5.0.1",
-    "vue-template-compiler": "^2.7.14"
+    "vue-template-compiler": "^2.7.15"
   }
 }