Fix some issues reported by lintian

Fix some issues reported by lintian

• Bump debhelper from old 11 to 12. (package-uses-old-debhelper-compat-version)
• Set debhelper-compat version in Build-Depends. (uses-debhelper-compat-file)
• Remove obsolete field Name from debian/upstream/metadata (already present in machine-readable debian/copyright).

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/iraf-rvsao/16c52b11-7fa0-49c3-857f-31a903a4cec1.

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/0c/64e650db71219d06211672059c08f4bd3f2664.debug

Files in first .changes but not in second

-rw-r--r--  root/root   /usr/lib/debug/.build-id/8e/db0692806ed119e4c4138028446ddd87623f93.debug

No differences were encountered between the control files of package **iraf-rvsao**

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

• Build-Ids: 8edb0692806ed119e4c4138028446ddd87623f93 0c64e650db71219d06211672059c08f4bd3f2664

You can also view the diffoscope diff (unfiltered).