Bump appsignal from 3.6.3 to 3.6.4

Bumps [appsignal](https://github.com/appsignal/appsignal-ruby) from 3.6.3 to 3.6.4.
- [Changelog](https://github.com/appsignal/appsignal-ruby/blob/main/CHANGELOG.md)
- [Commits](appsignal/appsignal-ruby@v3.6.3...v3.6.4)

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

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

Author: dependabot[bot]

Gemfile.lock

@@ -77,7 +77,7 @@ GEM
       tzinfo (~> 2.0)
     addressable (2.8.6)
       public_suffix (>= 2.0.2, < 6.0)
-    appsignal (3.6.3)
+    appsignal (3.6.4)
       rack
     autoprefixer-rails (10.4.16.0)
       execjs (~> 2)