docs(changelog): remove duplicate versions

Author: Lee-W

CHANGELOG.md

@@ -30,8 +30,6 @@
 
 - **filename**: ensure `file_name` can be passed to `changelog` from `bump` command
 
-## 3.11.0 (2023-10-17)
-
 ## v3.11.0 (2023-10-17)
 
 ### Feat
@@ -64,8 +62,6 @@
 
 - **conf**: handle parse error when init (#856)
 
-## 3.9.0 (2023-09-15)
-
 ## v3.9.0 (2023-09-15)
 
 ### Feat
@@ -99,8 +95,6 @@
 
 - **defaults.py**: add always_signoff config option for commits
 
-## 3.7.1 (2023-09-04)
-
 ## v3.7.1 (2023-09-04)
 
 ### Fix