fix: static username in home-manager-update script

flake.lock

@@ -286,14 +286,17 @@
         "opencode": "opencode"
       },
       "locked": {
-        "lastModified": 1770790246,
-        "narHash": "sha256-pUK1eP2iZ295Eo0MDmzLjGPp41dKEiKa4zY5g8TRnMI=",
-        "path": "/home/sascha.koenig/p/NIX/nixpkgs",
-        "type": "path"
+        "lastModified": 1770775409,
+        "narHash": "sha256-ZijMd/HxLKQEC9CRfdr5enXrkZjR6fiCU93vfqiB9fM=",
+        "ref": "refs/heads/master",
+        "rev": "19456800ed9d3ec26f07f807d96dfe09252123d4",
+        "revCount": 93,
+        "type": "git",
+        "url": "https://code.m3ta.dev/m3tam3re/nixpkgs"
       },
       "original": {
-        "path": "/home/sascha.koenig/p/NIX/nixpkgs",
-        "type": "path"
+        "type": "git",
+        "url": "https://code.m3ta.dev/m3tam3re/nixpkgs"
       }
     },
     "nix-ai-tools": {
@@ -577,16 +580,16 @@
         "nixpkgs": "nixpkgs_4"
       },
       "locked": {
-        "lastModified": 1770754894,
-        "narHash": "sha256-Uh3BQQFpYwYhMvSv3ZZYufA+EcRF+m34uS8BtZyCUlA=",
+        "lastModified": 1770761545,
+        "narHash": "sha256-IHN7Rh/Wb4TKdT1rkJYgkI0CLBXCcrM0OpCkIlycW+Y=",
         "owner": "anomalyco",
         "repo": "opencode",
-        "rev": "fbc41475b403a23f004f63289b264c224b9d6b2f",
+        "rev": "1bbbd51d48f38014674eebe1588f556da95b7b1f",
         "type": "github"
       },
       "original": {
         "owner": "anomalyco",
-        "ref": "v1.1.55",
+        "ref": "v1.1.56",
         "repo": "opencode",
         "type": "github"
       }