Bump vue-select from 3.20.3 to 3.20.4 (#857)

Bumps [vue-select](https://github.com/sagalbot/vue-select) from 3.20.3 to 3.20.4.
- [Release notes](https://github.com/sagalbot/vue-select/releases)
- [Changelog](https://github.com/sagalbot/vue-select/blob/master/release.config.js)
- [Commits](sagalbot/vue-select@v3.20.3...v3.20.4)

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

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

package.json

@@ -25,7 +25,7 @@
     "nuxt": "^2.17.3",
     "papaparse": "^5.5.2",
     "vue": "^2.7.16",
-    "vue-select": "^3.20.3",
+    "vue-select": "^3.20.4",
     "vue-server-renderer": "^2.7.16",
     "vue-template-compiler": "^2.7.16",
     "webpack": "^4.47.0"