Bump fastimage from 2.2.6 to 2.2.7

Bumps [fastimage](https://github.com/sdsykes/fastimage) from 2.2.6 to 2.2.7.
- [Changelog](https://github.com/sdsykes/fastimage/blob/master/CHANGELOG)
- [Commits](https://github.com/sdsykes/fastimage/compare/v2.2.6...v2.2.7)

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

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

Gemfile.lock

@@ -254,7 +254,7 @@ GEM
     faraday-rack (1.0.0)
     faraday-retry (1.0.3)
     fast_blank (1.0.1)
-    fastimage (2.2.6)
+    fastimage (2.2.7)
     ffi (1.15.5)
     ffi-compiler (1.0.1)
       ffi (>= 1.0.0)