add missing release note entries

Author: leofang

cuda_bindings/docs/source/release/11.8.7-notes.rst

@@ -9,3 +9,9 @@ Highlights
 
 * The ``cuda.bindings.nvvm`` Python module was added, wrapping the
   `libNVVM C API <https://docs.nvidia.com/cuda/libnvvm-api/>`_.
+
+
+Bug fixes
+---------
+
+* Fix segfault when converting char* NULL to bytes

cuda_bindings/docs/source/release/12.X.Y-notes.rst

@@ -11,5 +11,19 @@ Highlights
   `libNVVM C API <https://docs.nvidia.com/cuda/libnvvm-api/>`_.
 * Source build error checking added for missing required headers
 * Statically link CUDA Runtime instead of reimplementing it
-* Fix performance hint warnings raised by Cython 3
 * Move stream callback wrappers to the Python layer
+* Return code construction is made faster
+
+Bug fixes
+---------
+
+* Fix segfault when converting char* NULL to bytes
+
+
+Miscellaneous
+-------------
+
+* Benchmark suite is updated
+* Improvements in the introductory code samples
+* Fix performance hint warnings raised by Cython 3
+* Improvements in the Overview page