Prepare for 5.2.1

Author: benoit74

CHANGELOG.md

@@ -5,6 +5,8 @@ All notable changes to this project are documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html) (as of version 1.5.0).
 
+## [Unreleased]
+
 ## [5.2.0] - 2025-10-02
 
 ### Added

javascript/package.json

@@ -1,7 +1,7 @@
 {
   "name": "@openzim/wombat-setup",
   "type": "module",
-  "version": "5.2.0",
+  "version": "5.2.1-dev0",
   "license": "GPL-3.0-or-later",
   "author": "openZIM",
   "devDependencies": {

src/zimscraperlib/__about__.py

@@ -1 +1 @@
-__version__ = "5.2.0"
+__version__ = "5.2.1-dev0"