feh: 2.26.3 -> 2.26.4

Semi-automatic update generated by https://github.com/ryantm/nixpkgs-update tools.

This update was made based on information from https://repology.org/metapackage/feh/versions.

These checks were done:

- built on NixOS
- /nix/store/81pgn9ww37hp996d45xrm9wbl6z8wfc3-feh-2.26.4/bin/feh passed the binary check.
- /nix/store/81pgn9ww37hp996d45xrm9wbl6z8wfc3-feh-2.26.4/bin/.feh-wrapped passed the binary check.
- 2 of 2 passed binary check by having a zero exit code.
- 0 of 2 passed binary check by having the new version present in output.
- found 2.26.4 with grep in /nix/store/81pgn9ww37hp996d45xrm9wbl6z8wfc3-feh-2.26.4
- directory tree listing: https://gist.github.com/13a57ff84731135ece55fe0c99093a7d
- du listing: https://gist.github.com/dda79019b9ca9069b6dd9dbb773bf602

pkgs/applications/graphics/feh/default.nix

@@ -6,11 +6,11 @@ with stdenv.lib;
 
 stdenv.mkDerivation rec {
   name = "feh-${version}";
-  version = "2.26.3";
+  version = "2.26.4";
 
   src = fetchurl {
     url = "https://feh.finalrewind.org/${name}.tar.bz2";
-    sha256 = "08aagymgajcvciagwy2zdxhicvdfnjmd2xyx9bqjy7l1n16ydwrz";
+    sha256 = "15a7hjg7xwj1hsw3c5k18psvvmbqgn4g79qq03bsvibzl4kqakq7";
   };
 
   outputs = [ "out" "man" "doc" ];