chore(deps): update ghcr.io/immich-app/immich-server docker tag to v1.120.1

Author: renovate[bot]

hosts/nixos/klaus/default.nix

@@ -249,7 +249,7 @@ with lib;
         calibre.enable = true; # book reader
 
         immich = {
-          immich-version = "v1.118.2";
+          immich-version = "v1.120.1";
           enable = true;
         };
         jellyfin.enable = true;