Fix some issues reported by lintian

Fix some issues reported by lintian

• Bump debhelper from old 11 to 13. (package-uses-old-debhelper-compat-version)

• Set debhelper-compat version in Build-Depends. (uses-debhelper-compat-file)

• Set upstream metadata fields: Bug-Database, Bug-Submit, Repository-Browse. (upstream-metadata-file-is-missing, upstream-metadata-missing-bug-tracking)

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Build and test logs for this branch can be found at https://janitor.debian.net/lintian-fixes/pkg/piperka-client/40d58af0-cc06-49d6-9857-2c08b85ed346.

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 set of .debs but not in first

-rw-r--r--  root/root   /usr/lib/debug/.build-id/a3/89743e983b6ff8c5b01cc12ba0f4db8a545bc7.debug

Files in first set of .debs but not in second

-rw-r--r--  root/root   /usr/lib/debug/.build-id/c3/e0fc582bd38854ee92ea50f35e63e9a845188b.debug

No differences were encountered between the control files of package **piperka-client**

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

• Build-Ids: c3e0fc582bd38854ee92ea50f35e63e9a845188b a389743e983b6ff8c5b01cc12ba0f4db8a545bc7

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