Switch to clang r416183b 12.0.5.

Bug: http://b/182416735
Test: Treehugger

Change-Id: Ibc26561baaec925c2c05ae710de24aaaab18bef5
diff --git a/cc/config/global.go b/cc/config/global.go
index ed18300..23106ec 100644
--- a/cc/config/global.go
+++ b/cc/config/global.go
@@ -145,8 +145,8 @@
 
 	// prebuilts/clang default settings.
 	ClangDefaultBase         = "prebuilts/clang/host"
-	ClangDefaultVersion      = "clang-r416183"
-	ClangDefaultShortVersion = "12.0.4"
+	ClangDefaultVersion      = "clang-r416183b"
+	ClangDefaultShortVersion = "12.0.5"
 
 	// Directories with warnings from Android.bp files.
 	WarningAllowedProjects = []string{