Bump query-string from 5.1.1 to 8.1.0

Bumps [query-string](https://github.com/sindresorhus/query-string) from 5.1.1 to 8.1.0.
- [Release notes](https://github.com/sindresorhus/query-string/releases)
- [Commits](sindresorhus/query-string@v5.1.1...v8.1.0)

---
updated-dependencies:
- dependency-name: query-string
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

package.json

@@ -59,7 +59,7 @@
     "gatsby-yaml-full-file": "^0.2.1",
     "gatsby-yaml-full-markdown": "^0.4.6",
     "js-yaml": "^4.1.0",
-    "query-string": "^5.1.1",
+    "query-string": "^8.1.0",
     "react": "^16.14.0",
     "react-accessible-accordion": "^3.3.5",
     "react-addons-css-transition-group": "^15.6.2",