update codeql documentation

docs/codeql/codeql-overview/codeql-changelog/codeql-cli-2.23.1.rst

@@ -88,7 +88,7 @@ JavaScript/TypeScript
 *   Data flow is now tracked through the :code:`Promise.try` and :code:`Array.prototype.with` functions.
 *   Query :code:`js/index-out-of-bounds` no longer produces a false-positive when a strictly-less-than check overrides a previous less-than-or-equal test.
 *   The query :code:`js/remote-property-injection` now detects property injection vulnerabilities through object enumeration patterns such as :code:`Object.keys()`.
-*   The query "Permissive CORS configuration" (:code:`js/cors-permissive-configuration`) has been promoted from experimental and is now part of the default security suite. Thank you to @maikypedia who `submitted the original experimental query <https://github.com/github/codeql/pull/14342>`__!
+*   The query "Permissive CORS configuration" (:code:`js/cors-permissive-configuration`) has been promoted from experimental and is now part of the default security suite. Thank you to @maikypedia who `submitted the original experimental query <https://github.com/github/codeql/pull/14342>`__\ !
 
 Python
 """"""
@@ -126,7 +126,7 @@ Golang
 """"""
 
 *   The second argument of the :code:`CreateTemp` function, from the :code:`os` package, is no longer a path-injection sink due to proper sanitization by Go.
-*   The query "Uncontrolled data used in path expression" (:code:`go/path-injection`) now detects sanitizing a path by adding :code:`os.PathSeparator` or ``\`` to the beginning.
+*   The query "Uncontrolled data used in path expression" (:code:`go/path-injection`) now detects sanitizing a path by adding :code:`os.PathSeparator` or :code:`\` to the beginning.
 
 Java/Kotlin
 """""""""""

docs/codeql/codeql-overview/codeql-changelog/codeql-cli-2.23.9.rst

@@ -0,0 +1,25 @@
+.. _codeql-cli-2.23.9:
+
+==========================
+CodeQL 2.23.9 (2026-01-09)
+==========================
+
+.. contents:: Contents
+   :depth: 2
+   :local:
+   :backlinks: none
+
+This is an overview of changes in the CodeQL CLI and relevant CodeQL query and library packs. For additional updates on changes to the CodeQL code scanning experience, check out the `code scanning section on the GitHub blog <https://github.blog/tag/code-scanning/>`__, `relevant GitHub Changelog updates <https://github.blog/changelog/label/application-security/>`__, `changes in the CodeQL extension for Visual Studio Code <https://marketplace.visualstudio.com/items/GitHub.vscode-codeql/changelog>`__, and the `CodeQL Action changelog <https://github.com/github/codeql-action/blob/main/CHANGELOG.md>`__.
+
+Security Coverage
+-----------------
+
+CodeQL 2.23.9 runs a total of 491 security queries when configured with the Default suite (covering 166 CWE). The Extended suite enables an additional 135 queries (covering 35 more CWE).
+
+CodeQL CLI
+----------
+
+Deprecations
+~~~~~~~~~~~~
+
+*   Support for Kotlin version 1.6 and 1.7 has been deprecated and will be removed from CodeQL version 2.24.1. Starting with version 2.24.1, users will need to use Kotlin version >= 1.8 to extract Kotlin databases.

docs/codeql/codeql-overview/codeql-changelog/index.rst

@@ -11,6 +11,7 @@ A list of queries for each suite and language `is available here <https://docs.g
 .. toctree::
    :maxdepth: 1
 
+   codeql-cli-2.23.9
    codeql-cli-2.23.8
    codeql-cli-2.23.7
    codeql-cli-2.23.6