Add missing dependencies when generating spvtools_core_tables (#3199)

diff --git a/BUILD.gn b/BUILD.gn
index 28dcc3d..b7cde34 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -37,6 +37,8 @@
 
     sources = [
       core_json_file,
+      debuginfo_insts_file,
+      cldebuginfo100_insts_file,
     ]
     outputs = [
       core_insts_file,