Fix some issues reported by lintian

Fix some issues reported by lintian

• Update standards version to 4.4.1, no changes needed. (out-of-date-standards-version)
• Bump debhelper from old 11 to 12. (package-uses-old-debhelper-compat-version)

This merge proposal was created automatically by the Janitor bot.

You can follow up to this merge proposal as you normally would.

Build and test logs for this branch can be found at https://janitor.debian.net/lintian-fixes/pkg/ftpcopy/b9c94160-78f0-4666-a5b0-278d4cbe6c5b.

Debdiff

These changes affect the binary packages:

[The following lists of changes regard files as different if they have different names, permissions or owners.]

Files in second .changes but not in first

-rw-r--r--  root/root   /usr/lib/debug/.build-id/37/68d0e1849248c81e78b25508b127974d416c36.debug
-rw-r--r--  root/root   /usr/lib/debug/.build-id/e1/8093f052208a303eed5497fb43560373911023.debug
-rw-r--r--  root/root   /usr/lib/debug/.dwz/x86_64-linux-gnu/ftpcopy.debug

Files in first .changes but not in second

-rw-r--r--  root/root   /usr/lib/debug/.build-id/7d/02970079cd01cfb8967b318879a5b69713646a.debug
-rw-r--r--  root/root   /usr/lib/debug/.build-id/f7/24cffe5cd4b631b0210a26179d198518af4401.debug

No differences were encountered between the control files of package **ftpcopy**

Control files of package ftpcopy-dbgsym: lines which differ (wdiff format)

• Build-Ids: 7d02970079cd01cfb8967b318879a5b69713646a f724cffe5cd4b631b0210a26179d198518af4401 3768d0e1849248c81e78b25508b127974d416c36 e18093f052208a303eed5497fb43560373911023

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