Bump github-pages to 87
Bump github-pages to 87

Bumps [github-pages](https://github.com/github/pages-gem) from 73 to 87.
- [Commits](https://github.com/github/pages-gem/commits)

I'll automatically resolve any conflicts with this PR as long as you don't alter it yourself.

If you'd like to skip this version, you can just close this PR. If you have any feedback just mention @dependabot in the comments below.
theodi/bothan,theodi/metrics-api,theodi/metrics-api,theodi/bothan,theodi/bothan,theodi/metrics-api,theodi/bothan