Update code_releases_team_reports.rst

As per 2023 SPL Rulebook Appendix A.7

Author: pzrq

source/code_releases_team_reports.rst

@@ -2,6 +2,7 @@
 Code Release / Team Reports
 ###########################
 
+* `Code Release 2023 <https://github.com/UNSWComputing/rUNSWift-2023-release>`_ / Team Report is not required by 2023-10-15
 * `Code Release 2022 <https://github.com/UNSWComputing/rUNSWift-2022-release>`_ /
   `Team Report 2022 <https://github.com/UNSWComputing/rUNSWift-2022-release/raw/main/RoboCup_SPL_2022_rUNSWift_Team_Paper.pdf>`_
 * `Code Release 2019 <https://github.com/UNSWComputing/rUNSWift-2019-release>`_ /