Update version to 4.42.0b

Author: rmk135

docs/main/changelog.rst

@@ -7,7 +7,7 @@ that were made in every particular version.
 From version 0.7.6 *Dependency Injector* framework strictly
 follows `Semantic versioning`_
 
-Develop
+4.42.0b
 -------
 
 - Add support of Python 3.12.

src/dependency_injector/__init__.py

@@ -1,6 +1,6 @@
 """Top-level package."""
 
-__version__ = "4.41.0"
+__version__ = "4.42.0b"
 """Version number.
 
 :type: str