adding rules_license project for accessing sbom generation code for bazel

Change-Id: If67a2b9ea69ba2bc9c60aacf907f09f99e733386

diff --git a/default.xml b/default.xml
index f5d9f9a..bb0edea 100644
--- a/default.xml
+++ b/default.xml

@@ -44,4 +44,5 @@
   <project path="build/bazel_common_rules" name="platform/build/bazel_common_rules" />
   <project path="external/stardoc" name="platform/external/stardoc" />
   <project path="external/python/absl-py" name="platform/external/python/absl-py" />
+  <project path="external/bazelbuild-rules_license" name="platform/external/bazelbuild-rules_license" />
 </manifest>