Fix some issues reported by lintian

Fix some issues reported by lintian

• Bump debhelper from old 10 to 12. (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, Repository-Browse. (upstream-metadata-file-is-missing, upstream-metadata-missing-bug-tracking, upstream-metadata-missing-repository)

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Build and test logs for this branch can be found at https://janitor.debian.net/lintian-fixes/pkg/fiche/e110c955-183d-4cf9-a431-f5765a9b77d5.

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/34/9be21ec789a0aa90f605b395b55fbc8c08144e.debug

Files in first set of .debs but not in second

-rw-r--r--  root/root   /usr/lib/debug/.build-id/9f/e9f8f5f6141d75bb9e92f02994f3f2ab14fe39.debug

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

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

• Build-Ids: 9fe9f8f5f6141d75bb9e92f02994f3f2ab14fe39 349be21ec789a0aa90f605b395b55fbc8c08144e

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