chore(3p/naersk): Bump and fetch via niv instead

Change-Id: Icae69a1170e06f61aea5494963913c7278f18dce
Reviewed-on: https://cl.tvl.fyi/c/depot/+/5669
Tested-by: BuildkiteCI
Autosubmit: tazjin <tazjin@tvl.su>
Reviewed-by: sterni <sternenseemann@systemli.org>
Reviewed-by: grfn <grfn@gws.fyi>

third_party/naersk/default.nix

@@ -1,10 +1,3 @@
-{ pkgs, ... }:
+{ depot, pkgs, ... }:
 
-pkgs.callPackage
-  (pkgs.fetchFromGitHub {
-    owner = "nmattia";
-    repo = "naersk";
-    rev = "a3f40fe42cc6d267ff7518fa3199e99ff1444ac4";
-    sha256 = "1nf7fn8anghwf6p5p58ywbcwdkjxq112qv663rn52jq9k95iakdi";
-  })
-{ }
+pkgs.callPackage depot.third_party.sources.naersk { }