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

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>