texlive.bin.chktex: add perl interpreter to shebang (#231743)

pkgs/tools/typesetting/tex/texlive/bin.nix

···
   inherit (common) src;
 
   nativeBuildInputs = [ pkg-config ];
-  buildInputs = [ core/*kpathsea*/ ];
+  # perl used in shebang of script bin/deweb
+  buildInputs = [ core/*kpathsea*/ perl ];
 
   preConfigure = "cd texk/chktex";