maintainers: update all-maintainers.nix

Automated update of the master maintainers list combining:
- Home Manager specific maintainers from modules/lib/maintainers.nix
- Nixpkgs maintainers referenced in Home Manager modules

**Added:** 1 maintainers
**Removed:** 0 maintainers
**Total:** 275 → 276 maintainers

**✅ Added:** mdaniels5757

Generated by: lib/python/generate-all-maintainers.py

all-maintainers.nix

@@ -1561,6 +1561,13 @@
     name = "Marius Bergmann";
     source = "nixpkgs";
   };
+  mdaniels5757 = {
+    email = "nix@mdaniels.me";
+    github = "mdaniels5757";
+    githubId = 8762511;
+    name = "Michael Daniels";
+    source = "nixpkgs";
+  };
   michaelvanstraten = {
     email = "michael@vanstraten.de";
     github = "michaelvanstraten";