Update nixpkgs (lnd 0.8.1 -> lnd 0.9.0, clightning 0.8.0 -> 0.8.1)

pkgs/nixpkgs-pinned.nix

@@ -8,11 +8,11 @@ in
 {
   # To update, run ../helper/fetch-channel REV
   nixpkgs = fetch {
-    rev = "d85e435b7bded2596d7b201bcd938c94d8a921c1";
-    sha256 = "1msjm4kx1z73v444i1iybvmc7z0kfkbn9nzr21rn5yc4ql1jwf99";
+    rev = "c2c5dcc00b05f0f6007d7a997dc9d90aefb49f28";
+    sha256 = "1sjy9b1jh7k4bhww42zyjjim4c1nn8r4fdbqmyqy4hjyfrh9z6jc";
   };
   nixpkgs-unstable = fetch {
-    rev = "b0bbacb52134a7e731e549f4c0a7a2a39ca6b481";
-    sha256 = "15ix4spjpdm6wni28camzjsmhz0gzk3cxhpsk035952plwdxhb67";
+    rev = "ea79a830dcf9c0059656da7f52835d2663d5c436";
+    sha256 = "0vqnfh99358v9ym5z9i3dsfy0l4xxgh9hr278pi1y11gdl092014";
   };
 }

test/use-stable-pkgs.patch

@@ -26,16 +26,3 @@ services.connman doesn't exist in stable nixpkgs
  
      # Speed up booting by not waiting for ARP.
      networking.dhcpcd.extraConfig = "noarp";
-
-The test driver assumed coreutils to be in PATH. This fix will be ported to upstream.
---- a/nixos/lib/testing-python.nix
-+++ b/nixos/lib/testing-python.nix
-@@ -155,7 +155,7 @@ in rec {
-             --add-flags "''${vms[*]}" \
-             ${lib.optionalString enableOCR
-               "--prefix PATH : '${ocrProg}/bin:${imagemagick_tiff}/bin'"} \
--            --run "export testScript=\"\$(cat $out/test-script)\"" \
-+            --run "export testScript=\"\$(${coreutils}/bin/cat $out/test-script)\"" \
-             --set VLANS '${toString vlans}'
-           ln -s ${testDriver}/bin/nixos-test-driver $out/bin/nixos-run-vms
-           wrapProgram $out/bin/nixos-run-vms \