core-services-01(autodeploy): enforce nix label, update drone runner module

.drone.yml

@@ -3,6 +3,9 @@ kind: pipeline
 type: exec
 name: Test NixOS configurations
 
+node:
+  nix: true
+
 platform:
   os: linux
   arch: amd64

machines/core-services-01/drone-runners.nix

@@ -9,7 +9,7 @@ in
     env = [
       "DRONE_RUNNER_CAPACITY=${toString capacity}"
       "CLIENT_DRONE_RPC_HOST=127.0.0.1:${toString config.services.drone-server.port}"
-      "DRONE_RUNNER_LABELS=nix:true,core:true" # nix-ready and runs on a core machine.
+      "DRONE_RUNNER_LABELS=nix:true" # nix-ready machine.
     ];
     envFile = config.age.secrets.droneKeyFile.path;
   };

machines/core-services-01/nix/sources.json

@@ -14,7 +14,7 @@
     "klubrz-nur": {
         "branch": "main",
         "repo": "https://git.rz.ens.wtf/Klub-RZ/nur",
-        "rev": "2d9da6ab1f53af1bff116426e79aeb35408681f6",
+        "rev": "3f6a760254c3259e6abc0dcf443c533cd999a739",
         "type": "git"
     },
     "niv": {