New rectors

• New rector (10.3): Add rule for file_icon_class() and file_icon_map() by @timohuisman in #304
• Add common PHPUnit 10 deprecations by @bbrala in #307

Bugfixes

• symplify/rule-doc-generator doesnt like cs-fixer a lot of times. Adju… by @bbrala in #306

Full Changelog: 0.20.2...0.20.3