Prepare for a 25.3.0 release (#1448)

Author: alex

CHANGELOG.rst

@@ -4,7 +4,7 @@ Changelog
 Versions are year-based with a strict backward-compatibility policy.
 The third digit is only for regressions.
 
-25.3.0 (UNRELEASED)
+25.4.0 (UNRELEASED)
 -------------------
 
 Backward-incompatible changes:
@@ -16,6 +16,20 @@ Deprecations:
 Changes:
 ^^^^^^^^
 
+25.3.0 (2025-09-16)
+-------------------
+
+Backward-incompatible changes:
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+Deprecations:
+^^^^^^^^^^^^^
+
+Changes:
+^^^^^^^^
+
+- Maximum supported ``cryptography`` version is now 46.x.
+
 
 25.2.0 (2025-09-14)
 -------------------

setup.py

@@ -94,7 +94,7 @@ def find_meta(meta):
         packages=find_packages(where="src"),
         package_dir={"": "src"},
         install_requires=[
-            "cryptography>=45.0.7,<46",
+            "cryptography>=45.0.7,<47",
             (
                 "typing-extensions>=4.9; "
                 "python_version < '3.13' and python_version >= '3.8'"

src/OpenSSL/version.py

@@ -17,7 +17,7 @@
     "__version__",
 ]
 
-__version__ = "25.2.0"
+__version__ = "25.3.0"
 
 __title__ = "pyOpenSSL"
 __uri__ = "https://pyopenssl.org/"