Merge branch 'lintian-fixes' into 'master'

Fix some issues reported by lintian

See merge request !4

debian/changelog

@@ -2,6 +2,7 @@ golang-github-git-lfs-gitobj (2.1.0-2) UNRELEASED; urgency=medium
 
   * Remove constraints unnecessary since buster:
     + Build-Depends: Drop versioned constraint on golang-any.
+  * Set upstream metadata fields: Security-Contact.
 
  -- Debian Janitor <janitor@jelmer.uk>  Mon, 25 Apr 2022 03:19:08 -0000
 

debian/upstream/metadata

@@ -3,3 +3,4 @@ Bug-Database: https://github.com/git-lfs/gitobj/issues
 Bug-Submit: https://github.com/git-lfs/gitobj/issues/new
 Repository: https://github.com/git-lfs/gitobj.git
 Repository-Browse: https://github.com/git-lfs/gitobj
+Security-Contact: https://github.com/git-lfs/gitobj/tree/HEAD/SECURITY.md