[clang][deps] Add a release note for fixing crashes in `clang-scan-deps`. (#149857)

diff --git a/clang/docs/ReleaseNotes.rst b/clang/docs/ReleaseNotes.rst
index 4619027..27ed9b475 100644
--- a/clang/docs/ReleaseNotes.rst
+++ b/clang/docs/ReleaseNotes.rst
@@ -814,6 +814,8 @@
 - Fixed a failed assertion with an operator call expression which comes from a
   macro expansion when performing analysis for nullability attributes. (#GH138371)
 - Fixed a concept equivalent checking crash due to untransformed constraint expressions. (#GH146614)
+- Fixed a crash in `clang-scan-deps` when a module with the same name is found
+  in different locations (#GH134404, #GH146976).
 - Fix a crash when marco name is empty in ``#pragma push_macro("")`` or
   ``#pragma pop_macro("")``. (GH149762).