Bump fastimage from 2.2.0 to 2.2.1 (#15449)

Bumps [fastimage](https://github.com/sdsykes/fastimage) from 2.2.0 to 2.2.1.
- [Release notes](https://github.com/sdsykes/fastimage/releases)
- [Commits](https://github.com/sdsykes/fastimage/compare/v2.2.0...v2.2.1)

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Gemfile.lock

@@ -214,7 +214,7 @@ GEM
     faraday (1.0.1)
       multipart-post (>= 1.2, < 3)
     fast_blank (1.0.0)
-    fastimage (2.2.0)
+    fastimage (2.2.1)
     ffi (1.10.0)
     ffi-compiler (1.0.1)
       ffi (>= 1.0.0)