build(deps): bump bundler-audit from 0.8.0 to 0.9.0.1 (#361)

Bumps [bundler-audit](https://github.com/postmodern/bundler-audit) from 0.8.0 to 0.9.0.1.
- [Release notes](https://github.com/postmodern/bundler-audit/releases)
- [Changelog](https://github.com/rubysec/bundler-audit/blob/master/ChangeLog.md)
- [Commits](rubysec/bundler-audit@v0.8.0...v0.9.0.1)

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

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

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

Gemfile.lock

@@ -109,7 +109,7 @@ GEM
     bullet (6.1.5)
       activesupport (>= 3.0.0)
       uniform_notifier (~> 1.11)
-    bundler-audit (0.8.0)
+    bundler-audit (0.9.0.1)
       bundler (>= 1.2.0, < 3)
       thor (~> 1.0)
     byebug (11.1.3)