Fix some issues reported by lintian

Fix some issues reported by lintian

• Trim trailing whitespace. (trailing-whitespace)

• Use secure copyright file specification URI. (insecure-copyright-format-uri)

• Bump debhelper from deprecated 9 to 12. (package-uses-deprecated-debhelper-compat-version)

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

• Use secure URI in Vcs control header Vcs-Git. (vcs-field-uses-insecure-uri)

• Update Vcs-* headers from URL redirect. (vcs-obsolete-in-debian-infrastructure)

• Use canonical URL in Vcs-Git. (vcs-field-not-canonical)

This merge proposal was created automatically by the Janitor bot. For more information, including instructions on how to disable these merge proposals, see https://janitor.debian.net/lintian-fixes.

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

The bot will automatically update the merge proposal to resolve merge conflicts or close the merge proposal when all changes are applied through other means (e.g. cherry-picks). Updates may take several hours to propagate.

Build and test logs for this branch can be found at https://janitor.debian.net/lintian-fixes/pkg/lua-lpty/5e3bdc5f-9ecd-4882-a901-3ebba20988ae.

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/3f/e3e16db4c52b019435e9187a1566e2f315fae0.debug
-rw-r--r--  root/root   /usr/lib/debug/.build-id/86/f0f890c29c8280541cebbf0859c943c21bb44f.debug
-rw-r--r--  root/root   /usr/lib/debug/.dwz/x86_64-linux-gnu/lua-lpty.debug

Files in first set of .debs but not in second

-rw-r--r--  root/root   /usr/lib/debug/.build-id/00/14fbfac45ca80f6ae7d21458750206a2f02114.debug
-rw-r--r--  root/root   /usr/lib/debug/.build-id/fd/9ef5dbc21744774fa1e3089ed94782b73cdae8.debug

No differences were encountered between the control files of package **lua-lpty**

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

• Build-Ids: 0014fbfac45ca80f6ae7d21458750206a2f02114 fd9ef5dbc21744774fa1e3089ed94782b73cdae8 3fe3e16db4c52b019435e9187a1566e2f315fae0 86f0f890c29c8280541cebbf0859c943c21bb44f

No differences were encountered between the control files of package **lua-lpty-dev**

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