PYTHON-4305 Add changelog for 4.6.3 (#1598)

Author: ShaneHarvey

doc/changelog.rst

@@ -85,6 +85,21 @@ Unavoidable breaking changes
 
 - The "aws" extra now requires minimum version of ``1.1.0`` for ``pymongo_auth_aws``.
 
+Changes in Version 4.6.3
+------------------------
+
+PyMongo 4.6.3 fixes the following bug:
+
+- Fixed a potential memory access violation when decoding invalid bson.
+
+Issues Resolved
+...............
+
+See the `PyMongo 4.6.3 release notes in JIRA`_ for the list of resolved issues
+in this release.
+
+.. _PyMongo 4.6.3 release notes in JIRA: https://jira.mongodb.org/secure/ReleaseNote.jspa?projectId=10004&version=38360
+
 Changes in Version 4.6.2
 ------------------------
 
@@ -93,13 +108,29 @@ PyMongo 4.6.2 fixes the following bug:
 - Fixed a bug appearing in Python 3.12 where "RuntimeError: can't create new thread at interpreter shutdown"
   could be written to stderr when a MongoClient's thread starts as the python interpreter is shutting down.
 
+Issues Resolved
+...............
+
+See the `PyMongo 4.6.2 release notes in JIRA`_ for the list of resolved issues
+in this release.
+
+.. _PyMongo 4.6.2 release notes in JIRA: https://jira.mongodb.org/secure/ReleaseNote.jspa?projectId=10004&version=37906
+
 Changes in Version 4.6.1
 ------------------------
 
 PyMongo 4.6.1 fixes the following bug:
 
 - Ensure retryable read ``OperationFailure`` errors re-raise exception when 0 or NoneType error code is provided.
 
+Issues Resolved
+...............
+
+See the `PyMongo 4.6.1 release notes in JIRA`_ for the list of resolved issues
+in this release.
+
+.. _PyMongo 4.6.1 release notes in JIRA: https://jira.mongodb.org/secure/ReleaseNote.jspa?projectId=10004&version=37138
+
 Changes in Version 4.6
 ----------------------
 
@@ -132,6 +163,14 @@ PyMongo 4.6 brings a number of improvements including:
 - Added the :ref:`network-compression-example` documentation page.
 - Added more timeout information to network errors.
 
+Issues Resolved
+...............
+
+See the `PyMongo 4.6 release notes in JIRA`_ for the list of resolved issues
+in this release.
+
+.. _PyMongo 4.6 release notes in JIRA: https://jira.mongodb.org/secure/ReleaseNote.jspa?projectId=10004&version=36542
+
 Changes in Version 4.5
 ----------------------