Update release notes

Author: Mark2000

docs/source/Support/bskReleaseNotes.rst

@@ -42,6 +42,7 @@ Version |release|
   using ``uint64_t`` time values and then converted to a double.
 - Enhance how ``uint64_t`` values are converted to doubles.  BSK now warns if the time value is large enough such
   that the conversion method has a loss of precision in this process.
+- Support including an eclipse message in :ref:`SpacecraftLocation` to more accurately determine illumination.
 
 
 Version 2.7.0 (April 20, 2025)