treewide: http -> https sources (#42676)

* treewide: http -> https sources

This updates the source urls of all top-level packages from http to
https where possible.

* buildtorrent: fix url and tab -> spaces

pkgs/applications/version-management/redmine/default.nix

@@ -7,7 +7,7 @@ in stdenv.mkDerivation rec {
   name = "redmine-${version}";
 
   src = fetchurl {
-    url = "http://www.redmine.org/releases/${name}.tar.gz";
+    url = "https://www.redmine.org/releases/${name}.tar.gz";
     sha256 = "0x0zwxyj4dwbk7l64s3lgny10mjf0ba8jwrbafsm4d72sncmacv0";
   };