chore: request #44844 Update dev/build environment [W38 2025]

The main change is the Javy bump 4.0.0 -> 6.0.0:
https://github.com/bytecodealliance/javy/releases/tag/v6.0.0
https://github.com/bytecodealliance/javy/releases/tag/v5.0.0

Author: LeSuisse

artifact-post-action/auto-assign/javy.nix

@@ -10,11 +10,11 @@
 
 stdenv.mkDerivation rec {
   pname = "javy";
-  version = "4.0.0";
+  version = "6.0.0";
 
   src = fetchurl {
     url = "https://github.com/bytecodealliance/javy/releases/download/v${version}/javy-x86_64-linux-v${version}.gz";
-    hash = "sha256-sPVOFmDeQ4RAw35X6D4xAbV0jvZVtPiEe+XPYvJFUhQ=";
+    hash = "sha256-O2VdNxB5f+ywfEG17T+EcFwf0Ox9HthW/8WC/GPT3fE=";
   };
 
   nativeBuildInputs = [

artifact-post-action/tools/nixpkgs-pin.json

@@ -1,10 +1,10 @@
 {
   "url": "https://github.com/NixOS/nixpkgs.git",
-  "rev": "e44b8dc0882d66e2627a8ff252b04a22f4a629fd",
-  "date": "2025-07-30T03:55:55+01:00",
-  "path": "/nix/store/412dlryjdh5l3rxkrd5s4gki7x1j1j9z-nixpkgs",
-  "sha256": "0rsxl6z82720lzr967a8jjy2lwm774yqb21jjmc0pp4cjyjn7kf3",
-  "hash": "sha256-w81jpZeM3AtYlTKIhT05p3IqvJRIHZPyp0Acgb6hXWc=",
+  "rev": "124b966f89fad5468ca67ac7ee15af4ecce49b47",
+  "date": "2025-09-18T08:29:25Z",
+  "path": "/nix/store/2as5dz9b8y3b9z1ihr3z3xmpicm93p4x-nixpkgs",
+  "sha256": "01pphzr55061py9bl52nvasq1vcd1bkmrhv6x1x5afxjdhra1wxc",
+  "hash": "sha256-rPOgMmyyO1V66GbDXOcKje2AtdpWFLqSv8GAUvKH9wY=",
   "fetchLFS": false,
   "fetchSubmodules": false,
   "deepClone": false,

artifact-post-action/tools/oxalica-rust-overlay-pin.json

@@ -1,10 +1,10 @@
 {
   "url": "https://github.com/oxalica/rust-overlay.git",
-  "rev": "17b672c10c1798696a516cb879edbc2ebd0f58a4",
-  "date": "2025-07-31T02:48:06Z",
-  "path": "/nix/store/yrlhv41pbvcpw03r6kclmsfm6qxjbh90-rust-overlay",
-  "sha256": "1jn8nqyghr3laphjs9xk9sgwg4hr3gwrc3b4jqjz16fskimr7kis",
-  "hash": "sha256-Os6Ta5zamfAllmQNlvkbGZLHn06zJy3hVXRk+Dy2yMo=",
+  "rev": "e26a009e7edab102bd569dc041459deb6c0009f4",
+  "date": "2025-09-19T02:34:10Z",
+  "path": "/nix/store/v9mv99h53c3m1zq6fs600djq812f3z76-rust-overlay",
+  "sha256": "15w2jp3wg4vypsx3l5kc9wlcbjkfyxa3l3aay8cx5qv6mgqvc3bf",
+  "hash": "sha256-bg228atm49IZ8koNOlT3bsrFKE9sFjq6vn6Tx8eVgpc=",
   "fetchLFS": false,
   "fetchSubmodules": false,
   "deepClone": false,