Merge pull request #281182 from trofi/pam-re-enable-lastlog

pam: re-enable `pam_lastlog` module

pkgs/os-specific/linux/pam/default.nix

···
   configureFlags = [
     "--includedir=${placeholder "out"}/include/security"
     "--enable-sconfigdir=/etc/security"
+    # The module is deprecated. We re-enable it explicitly until NixOS
+    # module stops using it.
+    "--enable-lastlog"
   ];
 
   installFlags = [