Bump compreffor from 0.5.2 to 0.5.5

Bumps [compreffor](https://github.com/googlefonts/compreffor) from 0.5.2 to 0.5.5.
- [Release notes](https://github.com/googlefonts/compreffor/releases)
- [Commits](googlefonts/compreffor@0.5.2...0.5.5)

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

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

requirements.txt

@@ -2,7 +2,7 @@ appdirs==1.4.4
 attrs==22.1.0
 booleanOperations==0.9.0
 cffsubr==0.2.9.post1
-compreffor==0.5.2
+compreffor==0.5.5
 cu2qu==1.6.7.post1
 fontbakery[freetype]==0.8.10
 fontmake==3.4.0