Bump astroid to 3.0.3, update changelog (#2374)

diff --git a/ChangeLog b/ChangeLog
index 943bc33..defa017 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -9,9 +9,10 @@
 
 
 
+
 What's New in astroid 3.0.3?
 ============================
-Release date: TBA
+Release date: 2024-02-04
 
 
 * Fix type of ``UnicodeDecodeError.object`` inferred as ``str`` instead of ``bytes``.
diff --git a/astroid/__pkginfo__.py b/astroid/__pkginfo__.py
index 2621fe6..99baf21 100644
--- a/astroid/__pkginfo__.py
+++ b/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__ = "3.0.2"
+__version__ = "3.0.3"
 version = __version__
diff --git a/tbump.toml b/tbump.toml
index c2e5c17..ba23ec0 100644
--- a/tbump.toml
+++ b/tbump.toml
@@ -1,7 +1,7 @@
 github_url = "https://github.com/pylint-dev/astroid"
 
 [version]
-current = "3.0.2"
+current = "3.0.3"
 regex = '''
 ^(?P<major>0|[1-9]\d*)
 \.