Bump ruby-vips from 2.2.4 to 2.2.5

Bumps [ruby-vips](https://github.com/libvips/ruby-vips) from 2.2.4 to 2.2.5.
- [Changelog](https://github.com/libvips/ruby-vips/blob/master/CHANGELOG.md)
- [Commits](libvips/ruby-vips@v2.2.4...v2.2.5)

---
updated-dependencies:
- dependency-name: ruby-vips
  dependency-version: 2.2.5
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

Gemfile.lock

@@ -158,7 +158,7 @@ GEM
       chunky_png (~> 1.0)
       rqrcode_core (~> 1.0)
     rqrcode_core (1.2.0)
-    ruby-vips (2.2.4)
+    ruby-vips (2.2.5)
       ffi (~> 1.12)
       logger
     safe_yaml (1.0.5)