ZNC: Use su-exec instead of sudo

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: be14d42ab7a49d36285fb1b3d0f12de422705617
+GitCommit: 4656af8c0a93cae3f59af966970f0716709caec7
 Directory: full
 
 Tags: 1.6.4-slim, 1.6-slim, slim
-GitCommit: be14d42ab7a49d36285fb1b3d0f12de422705617
+GitCommit: 4656af8c0a93cae3f59af966970f0716709caec7
 Directory: slim