Bump version 20220506 & fix small issue with types

CHANGELOG.md

@@ -4,7 +4,7 @@ All notable changes in pdfminer.six will be documented in this file.
 
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
-## [Unreleased]
+## [20220506]
 
 ### Fixed
 

pdfminer/layout.py

@@ -495,7 +495,8 @@ class LTTextLine(LTTextContainer[TextLineElement]):
         )
 
     def analyze(self, laparams: LAParams) -> None:
-        LTTextContainer.analyze(self, laparams)
+        for obj in self._objs:
+            obj.analyze(laparams)
         LTContainer.add(self, LTAnno("\n"))
         return