Update release notes

Author: juan-g-bonilla

docs/source/Support/bskReleaseNotes.rst

@@ -87,6 +87,10 @@ Version |release|
   :ref:`scenarioPrescribedMotionWithTranslationBranching` and :ref:`scenarioPrescribedMotionWithRotationBranching`.
 - Fixed a bug where :ref:`spinningBodyOneDOFStateEffector` and :ref:`spinningBodyNDOFStateEffector`
   both registered their states under the same name, resulting in overwriting and a ``BSK_ERROR``.
+- Avoid reloading and re-unloading SPICE kernels when multiple simulations run in the same process. This
+  fixes the problem with Spice becoming very slow when multiple simulation are run in parallel, addresses
+  the Spice kernel load limit of 5000 kernels, and prevents a rare bug where kernels are corrupted when
+  loaded from multiple simulations at the same time.
 
 
 Version 2.8.0 (August 30, 2025)