build(deps): bump ffi from 2.1.4 to 2.1.5

Bumps [ffi](https://github.com/dart-lang/native/tree/main/pkgs) from 2.1.4 to 2.1.5.
- [Release notes](https://github.com/dart-lang/native/releases)
- [Commits](https://github.com/dart-lang/native/commits/ffi-v2.1.5/pkgs)

---
updated-dependencies:
- dependency-name: ffi
  dependency-version: 2.1.5
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

pubspec.lock

@@ -405,10 +405,10 @@ packages:
     dependency: "direct main"
     description:
       name: ffi
-      sha256: "289279317b4b16eb2bb7e271abccd4bf84ec9bdcbe999e278a94b804f5630418"
+      sha256: d07d37192dbf97461359c1518788f203b0c9102cfd2c35a716b823741219542c
       url: "https://pub.dev"
     source: hosted
-    version: "2.1.4"
+    version: "2.1.5"
   ffigen:
     dependency: "direct dev"
     description: