Bump phony from 2.20.8 to 2.20.9

Bumps [phony](https://github.com/floere/phony) from 2.20.8 to 2.20.9.
- [Changelog](https://github.com/floere/phony/blob/master/history.textile)
- [Commits](floere/phony@v2.20.8...v2.20.9)

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

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

Gemfile.lock

@@ -71,7 +71,7 @@ GEM
     parser (3.2.2.3)
       ast (~> 2.4.1)
       racc
-    phony (2.20.8)
+    phony (2.20.9)
     psych (5.1.1)
       stringio
     racc (1.7.1)