Bump octokit from 8.0.0 to 8.1.0 in /railseventstore.org

Bumps [octokit](https://github.com/octokit/octokit.rb) from 8.0.0 to 8.1.0.
- [Release notes](https://github.com/octokit/octokit.rb/releases)
- [Changelog](https://github.com/octokit/octokit.rb/blob/main/RELEASE.md)
- [Commits](octokit/octokit.rb@v8.0.0...v8.1.0)

---
updated-dependencies:
- dependency-name: octokit
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

railseventstore.org/Gemfile.lock

@@ -12,6 +12,7 @@ GEM
       activesupport (>= 3.0.0)
       ruby2_keywords (>= 0.0.2)
     backports (3.24.1)
+    base64 (0.2.0)
     coffee-script (2.4.1)
       coffee-script-source
       execjs
@@ -85,7 +86,8 @@ GEM
     minitest (5.21.2)
     net-http (0.4.1)
       uri
-    octokit (8.0.0)
+    octokit (8.1.0)
+      base64
       faraday (>= 1, < 3)
       sawyer (~> 0.9)
     padrino-helpers (0.15.3)