Bump ffi from 1.15.5 to 1.16.3

Bumps [ffi](https://github.com/ffi/ffi) from 1.15.5 to 1.16.3.
- [Changelog](https://github.com/ffi/ffi/blob/master/CHANGELOG.md)
- [Commits](ffi/ffi@v1.15.5...v1.16.3)

---
updated-dependencies:
- dependency-name: ffi
  dependency-type: indirect
  update-type: version-update:semver-minor
...

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

Gemfile.lock

@@ -146,7 +146,7 @@ GEM
     factory_bot_rails (6.2.0)
       factory_bot (~> 6.2.0)
       railties (>= 5.0.0)
-    ffi (1.15.5)
+    ffi (1.16.3)
     ffi-compiler (1.0.1)
       ffi (>= 1.0.0)
       rake