vanadium/connectivity: use npins to pin dns ai blocklist

nix/configurations/vanadium/nixos/connectivity.nix

@@ -205,14 +205,8 @@
       # Gotta preserve that thinking ability of my smoof bwain
       blocked_names = {
         blocked_names_file = let
-          ai-blocklist =
-            pkgs.fetchFromGitHub {
-              owner = "laylavish";
-              repo = "uBlockOrigin-HUGE-AI-Blocklist";
-              rev = "9bb188e2701138e03f73bacebd6b19b181ca0012";
-              hash = "sha256-p3wfR28DH6V8BHn9DT10d09Yq3mdbBecWwlR1CdDYUA=";
-            }
-            + "/noai_hosts.txt";
+          sources = import ../../../../npins;
+          ai-blocklist = sources.ai-blocklist + "/noai_hosts.txt";
 
           # Blocklists are made of one pattern per line.
           # https://github.com/DNSCrypt/dnscrypt-proxy/blob/fa59f990431a49b6485f63f96601bc7e64017bf8/dnscrypt-proxy/example-dnscrypt-proxy.toml#L583C4-L583C75

npins/sources.json

@@ -16,6 +16,20 @@
       "url": "https://api.github.com/repos/ryantm/agenix/tarball/0.15.0",
       "hash": "01dhrghwa7zw93cybvx4gnrskqk97b004nfxgsys0736823956la"
     },
+    "ai-blocklist": {
+      "type": "Git",
+      "repository": {
+        "type": "GitHub",
+        "owner": "laylavish",
+        "repo": "uBlockOrigin-HUGE-AI-Blocklist"
+      },
+      "branch": "main",
+      "submodules": false,
+      "revision": "9bb188e2701138e03f73bacebd6b19b181ca0012",
+      "url": "https://github.com/laylavish/uBlockOrigin-HUGE-AI-Blocklist/archive/9bb188e2701138e03f73bacebd6b19b181ca0012.tar.gz",
+      "hash": "0h318ckx8l89bff1fv4xg6mmhkvpfhyhvzbr0iyaa7q3dx3iyz57",
+      "frozen": true
+    },
     "disko": {
       "type": "GitRelease",
       "repository": {