Update changelog with recent fixes. (#14313)

Author: sean-mcmanus

Extension/CHANGELOG.md

@@ -1,6 +1,6 @@
 # C/C++ for Visual Studio Code Changelog
 
-## Version 1.31.3: March 23, 2026
+## Version 1.31.3: March 24, 2026
 ### Enhancements
 * Add support for `program` in attach debug configurations. [#14046](https://github.com/microsoft/vscode-cpptools/issues/14046)
   * Thanks for the contribution. [@Subham-KRLX (Subham)](https://github.com/Subham-KRLX) [PR #14108](https://github.com/microsoft/vscode-cpptools/pull/14108)
@@ -15,6 +15,8 @@
 * Fix workspace symbol search with `scope::variable` not working after symbols are deleted and then added back. [#14200](https://github.com/microsoft/vscode-cpptools/issues/14200)
 * Fix bugs where a path was checked for existence but not whether it was a file or a folder. [#14257](https://github.com/microsoft/vscode-cpptools/issues/14257)
 * Fix the Call Hierarchy Callers Of progress UI not showing. [#14287](https://github.com/microsoft/vscode-cpptools/issues/14287)
+* Fix an IntelliSense crash when using GCC 16 `span` and `string`. [#14309](https://github.com/microsoft/vscode-cpptools/issues/14309)
+* Fix `_CONTROL_FLOW_GUARD` not being defined when `/guard:cf` is used in MSVC mode. [#14310](https://github.com/microsoft/vscode-cpptools/issues/14310)
 * Add IntelliSense support for `__builtin_is_implicit_lifetime`.
 * Fix three IntelliSense process crashes.
 * Fix some missing translations.