fix(deps): pin dependency docsearch.js to 2.5.2 (#26)

This PR contains the following updates:

| Package | Type | Update | Change | References |
|---|---|---|---|---|
| docsearch.js | dependencies | pin | `^2.5.2` -> `2.5.2` | [source](https://renovatebot.com/gh/algolia/docsearch) |

:pushpin: **Important**: Renovate will wait until you have merged this Pin PR before creating any *upgrade* PRs for the affected packages. Add the preset `:preserveSemverRanges` your config if you instead don't wish to pin dependencies.

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site/package.json

@@ -6,7 +6,7 @@
   "dependencies": {
     "bulma": "0.7.2",
     "classnames": "2.2.6",
-    "docsearch.js": "^2.5.2",
+    "docsearch.js": "2.5.2",
     "gatsby": "2.0.31",
     "gatsby-image": "2.0.17",
     "gatsby-plugin-catch-links": "2.0.5",

site/yarn.lock

@@ -3545,7 +3545,7 @@ dns-txt@^2.0.2:
   dependencies:
     buffer-indexof "^1.0.0"
 
-docsearch.js@^2.5.2:
+[email protected]:
   version "2.5.2"
   resolved "https://registry.yarnpkg.com/docsearch.js/-/docsearch.js-2.5.2.tgz#1a3521c92e5f252cc522c57357ef1c47b945b381"
   dependencies: