Bump tippy.js from 6.3.2 to 6.3.7 (#291)

Bumps [tippy.js](https://github.com/atomiks/tippyjs) from 6.3.2 to 6.3.7.
- [Release notes](https://github.com/atomiks/tippyjs/releases)
- [Commits](https://github.com/atomiks/tippyjs/compare/v6.3.2...v6.3.7)

---
updated-dependencies:
- dependency-name: tippy.js
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

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

package.json

@@ -39,7 +39,7 @@
     "react-google-recaptcha": "^2.1.0",
     "react-modal": "^3.14.4",
     "sanitize-html": "^2.5.3",
-    "tippy.js": "^6.3.1",
+    "tippy.js": "^6.3.7",
     "twemoji": "^13.1.0"
   },
   "devDependencies": {