Bump astroid to 4.0.0, update changelog

Author: jacobtylerwalls

CONTRIBUTORS.txt

@@ -224,3 +224,5 @@ under this name, or we did not manage to find their commits in the history.
 - carl
 - alain lefroy
 - Mark Gius
+- Robert Hofer <[email protected]>
+- Emmanuel Ferdman <[email protected]>

ChangeLog

@@ -3,10 +3,22 @@ astroid's ChangeLog
 ===================
 
 
-What's New in astroid 4.0.0?
+What's New in astroid 4.1.0?
+============================
+Release date: TBA
+
+
+
+What's New in astroid 4.0.1?
 ============================
 Release date: TBA
 
+
+
+What's New in astroid 4.0.0?
+============================
+Release date: 2025-10-05
+
 * Support constraints from ternary expressions in inference.
 
   Closes pylint-dev/pylint#9729

astroid/__pkginfo__.py

@@ -2,5 +2,5 @@
 # For details: https://github.com/pylint-dev/astroid/blob/main/LICENSE
 # Copyright (c) https://github.com/pylint-dev/astroid/blob/main/CONTRIBUTORS.txt
 
-__version__ = "4.0.0rc1-dev0"
+__version__ = "4.0.0"
 version = __version__

tbump.toml

@@ -1,7 +1,7 @@
 github_url = "https://github.com/pylint-dev/astroid"
 
 [version]
-current = "4.0.0rc1-dev0"
+current = "4.0.0"
 regex = '''
 ^(?P<major>0|[1-9]\d*)
 \.