Changelog update

Author: reportportal.io

CHANGELOG.md

@@ -1,6 +1,8 @@
 # Changelog
 
 ## [Unreleased]
+
+## [5.5.1]
 ### Added
 - Too long BDD Step name truncation on reporting, by @HardNorth
 - `use_index` parameter for `@pytest.mark.parametrize` decorator, which replaces parameter values with their indexes in the list, by @ramir-dn