layers: bump known_good to get reqd glslang

Change-Id: I635236cac68bf1d1d273f9c5bc005a06d3d930b0
diff --git a/scripts/known_good.json b/scripts/known_good.json
index ecd5d55..9465b7d 100644
--- a/scripts/known_good.json
+++ b/scripts/known_good.json
@@ -6,7 +6,7 @@
       "sub_dir" : "glslang",
       "build_dir" : "glslang/build",
       "install_dir" : "glslang/build/install",
-      "commit" : "806af25f749b4d7cd861eaebc32474b3a7d102c0",
+      "commit" : "3f05beddc8f69466894468efd661826d15c4d90b",
       "prebuild" : [
         "python update_glslang_sources.py"
       ]