Update to reference commit 74b6d54502f001eba413b1bef6b98ff86a396b2c of Dockerfile

library/znc

@@ -2,9 +2,9 @@ Maintainers: Alexey Sokolov <[email protected]> (@DarthGandalf)
 GitRepo: https://github.com/znc/znc-docker.git
 
 Tags: 1.6.4, 1.6, latest
-GitCommit: fb2c648f77e8252dbc9441409dec451774893111
+GitCommit: 74b6d54502f001eba413b1bef6b98ff86a396b2c
 Directory: full
 
 Tags: 1.6.4-small, 1.6-small, small
-GitCommit: fb2c648f77e8252dbc9441409dec451774893111
+GitCommit: 74b6d54502f001eba413b1bef6b98ff86a396b2c
 Directory: small