fix(deps): Add missing peer dependency (#4950)
fix(deps): Add missing peer dependency (#4950)

The dependency algoliasearch-helper declares algoliasearch as a peer
dependency [1], but instantsearch.js does not declare it as a dependency
not a peer dependency.
This can cause undefined issues during peer dependency resolution, and
triggers warnings when using yarn v2+.

The commit adds algoliasearch as a peer dependency.

[1] https://github.com/algolia/algoliasearch-helper-js/blob/develop/package.json#L103
algolia/instantsearch.js,algolia/instantsearch.js,algolia/instantsearch.js