git subrepo pull (merge) mailcow/src/mailcow-dockerized

Among other things, this updates Dovecot to 2.3.13, which is a
critical security update.

subrepo: subdir:   "mailcow/src/mailcow-dockerized"
  merged:   "376574d9"
upstream: origin:   "https://github.com/mailcow/mailcow-dockerized.git"
  branch:   "master"
  commit:   "6f14955b"
git-subrepo: version:  "0.4.3"
  origin:   "???"
  commit:   "???"
Change-Id: Idf4859ddaaebf6997afbb0cebffc8bf3f5b902a0
diff --git a/mailcow/src/mailcow-dockerized/data/web/inc/lib/vendor/phpmailer/phpmailer/VERSION b/mailcow/src/mailcow-dockerized/data/web/inc/lib/vendor/phpmailer/phpmailer/VERSION
index 3af67b5..4ac4fde 100644
--- a/mailcow/src/mailcow-dockerized/data/web/inc/lib/vendor/phpmailer/phpmailer/VERSION
+++ b/mailcow/src/mailcow-dockerized/data/web/inc/lib/vendor/phpmailer/phpmailer/VERSION
@@ -1 +1 @@
-6.1.6
\ No newline at end of file
+6.2.0
\ No newline at end of file