debian/copyright: Update copyright attributions.

debian/copyright

@@ -122,6 +122,7 @@ Comment:
  in COPYING.LIB file.
 
 Files: .github/issue_template.md
+       .github/FUNDING.yml
        .travis.yml
        .tx/config
        data/Makefile.am
@@ -129,7 +130,6 @@ Files: .github/issue_template.md
        data/*.ui
        data/mate-screensaver
        data/*.desktop.in
-       data/*.directory.in
        data/*.pc.in
        data/*.menu.in
        data/*.service.in
@@ -139,7 +139,10 @@ Files: .github/issue_template.md
        data/images/*.svg
        data/images/cosmos/*
        doc/*
+       its/wallpaper.its
+       its/wallpaper.loc
        po/LINGUAS
+       po/Makevars
        po/POTFILES.*
        savers/Makefile.am
        savers/*.desktop.in.in
@@ -149,8 +152,6 @@ Files: .github/issue_template.md
        src/debug-screensaver.sh
        src/gs-marshal.list
        AUTHORS
-       COPYING
-       COPYING.LIB
        ChangeLog
        Makefile.am
        NEWS