Bump carrierwave from 2.2.1 to 2.2.2

Bumps [carrierwave](https://github.com/carrierwaveuploader/carrierwave) from 2.2.1 to 2.2.2.
- [Release notes](https://github.com/carrierwaveuploader/carrierwave/releases)
- [Changelog](https://github.com/carrierwaveuploader/carrierwave/blob/master/CHANGELOG.md)
- [Commits](https://github.com/carrierwaveuploader/carrierwave/compare/v2.2.1...v2.2.2)

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

Gemfile.lock

@@ -125,7 +125,7 @@ GEM
       rack-test (>= 0.6.3)
       regexp_parser (>= 1.5, < 3.0)
       xpath (~> 3.2)
-    carrierwave (2.2.1)
+    carrierwave (2.2.2)
       activemodel (>= 5.0.0)
       activesupport (>= 5.0.0)
       addressable (~> 2.6)
@@ -179,7 +179,7 @@ GEM
     faye-websocket (0.11.1)
       eventmachine (>= 0.12.0)
       websocket-driver (>= 0.5.1)
-    ffi (1.15.0)
+    ffi (1.15.1)
     forgery (0.8.1)
     globalid (0.4.2)
       activesupport (>= 4.2.0)