Bump vue-instantsearch from 3.7.0 to 3.8.1

Bumps [vue-instantsearch](https://github.com/algolia/vue-instantsearch) from 3.7.0 to 3.8.1.
- [Release notes](https://github.com/algolia/vue-instantsearch/releases)
- [Changelog](https://github.com/algolia/vue-instantsearch/blob/master/CHANGELOG.md)
- [Commits](algolia/vue-instantsearch@v3.7.0...v3.8.1)

---
updated-dependencies:
- dependency-name: vue-instantsearch
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

package-lock.json

@@ -46,7 +46,7 @@
     "uid": "^2.0.0",
     "vue": "^2.6.14",
     "vue-awesome-swiper": "^4.1.1",
-    "vue-instantsearch": "^3.7.0",
+    "vue-instantsearch": "^3.8.1",
     "vue-server-renderer": "^2.6.14",
     "vue-template-compiler": "^2.6.14"
   }