Bump ffi from 1.15.3 to 1.15.4 (#19165)

Bumps [ffi](https://github.com/ffi/ffi) from 1.15.3 to 1.15.4.
- [Release notes](https://github.com/ffi/ffi/releases)
- [Changelog](https://github.com/ffi/ffi/blob/master/CHANGELOG.md)
- [Commits](https://github.com/ffi/ffi/compare/v1.15.3...v1.15.4)

---
updated-dependencies:
- dependency-name: ffi
  dependency-type: indirect
  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>

Gemfile.lock

@@ -25,8 +25,8 @@ GEM
       http_parser.rb (~> 0.6.0)
     eventmachine (1.2.7)
     eventmachine (1.2.7-x64-mingw32)
-    ffi (1.15.3)
-    ffi (1.15.3-x64-mingw32)
+    ffi (1.15.4)
+    ffi (1.15.4-x64-mingw32)
     forwardable-extended (2.6.0)
     http_parser.rb (0.6.0)
     i18n (1.8.10)