maintainers: add debtquity

* add self to `mainatiners-list.nix`
* no maintainers for `valkey`, add handle to `meta.maintainers`

maintainers/maintainer-list.nix

@@ -6250,6 +6250,13 @@
     githubId = 32403873;
     keys = [ { fingerprint = "3EDD 9C88 B0F2 58F8 C25F  5D2C CCBC 8AA1 AF06 2142"; } ];
   };
+  debtquity = {
+    name = "Darren Rambaud";
+    email = "d.nixpkgs@ryz.dev";
+    github = "debtquity";
+    githubId = 225436867;
+    matrix = "@debtquity:matrix.org";
+  };
   declan = {
     name = "Declan Rixon";
     email = "declan.fraser.rixon@gmail.com";

pkgs/by-name/va/valkey/package.nix

@@ -117,7 +117,9 @@ stdenv.mkDerivation (finalAttrs: {
     description = "High-performance data structure server that primarily serves key/value workloads";
     license = lib.licenses.bsd3;
     platforms = lib.platforms.all;
-    maintainers = [ ];
+    maintainers = with lib.maintainers; [
+      debtquity
+    ];
     changelog = "https://github.com/valkey-io/valkey/releases/tag/${finalAttrs.version}";
     mainProgram = "valkey-cli";
   };