Revert "Update log from master" because the master branch is closed.

This reverts commit 81c6c8c159b6f184fc52bef09adc0157e1d41deb.

libs/log

@@ -1 +1 @@
-Subproject commit b22211073860190985d700c3f30a32a494878436
+Subproject commit dc840d1f9539486316cf154e145b2f2db20d3888