pg-dump-anon: modernize

pkgs/by-name/pg/pg-dump-anon/package.nix

···
   src = fetchFromGitLab {
     owner = "dalibo";
     repo = "postgresql_anonymizer";
-    rev = version;
+    tag = version;
     hash = "sha256-MGdGvd4P1fFKdd6wnS2V5Tdly6hJlAmSA4TspnO/6Tk=";
   };
 
···
       --prefix PATH : ${lib.makeBinPath [ postgresql ]}
   '';
 
-  meta = with lib; {
+  meta = {
     description = "Export databases with data being anonymized with the anonymizer extension";
     homepage = "https://postgresql-anonymizer.readthedocs.io/en/stable/";
-    teams = [ teams.flyingcircus ];
-    license = licenses.postgresql;
+    teams = [ lib.teams.flyingcircus ];
+    license = lib.licenses.postgresql;
     mainProgram = "pg_dump_anon";
   };
 }