Update dependency haml_lint to v0.56.0 (#29082)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Gemfile.lock

@@ -319,7 +319,7 @@ GEM
       activesupport (>= 5.1)
       haml (>= 4.0.6)
       railties (>= 5.1)
-    haml_lint (0.55.0)
+    haml_lint (0.56.0)
       haml (>= 5.0)
       parallel (~> 1.10)
       rainbow