ruby required fix, check for Integer not FixnumHEADupstream

- Ruby Unify Fixnum and Bignum into Integer
  (Feature #12005) - Fixnum removed
  https://bugs.ruby-lang.org/issues/12005
- Fixes Debian reported Bug [sisu]
  sisu: txt output not generated (Closes: #1098248)

1 files changed, 3 insertions, 3 deletions

diff --git a/flake.lock b/flake.lock
index 646b379d..9d3bb4e5 100644
--- a/flake.lock
+++ b/flake.lock
@@ -2,11 +2,11 @@
   "nodes": {
     "nixpkgs": {
       "locked": {
-        "lastModified": 1749213349,
-        "narHash": "sha256-UAaWOyQhdp7nXzsbmLVC67fo+QetzoTm9hsPf9X3yr4=",
+        "lastModified": 1755829505,
+        "narHash": "sha256-4/Jd+LkQ2ssw8luQVkqVs9spDBVE6h/u/hC/tzngsPo=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "a4ff0e3c64846abea89662bfbacf037ef4b34207",
+        "rev": "f937f8ecd1c70efd7e9f90ba13dfb400cf559de4",
         "type": "github"
       },
       "original": {