Upgrade Sorbet to v0.5.11577 (#459)

Author: vinistock

Gemfile.lock

@@ -235,14 +235,14 @@ GEM
       sorbet-runtime (>= 0.5.10782)
     ruby-progressbar (1.13.0)
     ruby2_keywords (0.0.5)
-    sorbet (0.5.11554)
-      sorbet-static (= 0.5.11554)
-    sorbet-runtime (0.5.11554)
-    sorbet-static (0.5.11554-universal-darwin)
-    sorbet-static (0.5.11554-x86_64-linux)
-    sorbet-static-and-runtime (0.5.11554)
-      sorbet (= 0.5.11554)
-      sorbet-runtime (= 0.5.11554)
+    sorbet (0.5.11577)
+      sorbet-static (= 0.5.11577)
+    sorbet-runtime (0.5.11577)
+    sorbet-static (0.5.11577-universal-darwin)
+    sorbet-static (0.5.11577-x86_64-linux)
+    sorbet-static-and-runtime (0.5.11577)
+      sorbet (= 0.5.11577)
+      sorbet-runtime (= 0.5.11577)
     spoom (1.3.0)
       erubi (>= 1.10.0)
       prism (>= 0.19.0)