awk: Update to 20250116 bsd-feature 2dce54b053d4

Update to 20250116 upstream. This fixes issues with bad line numbers,
hex numbers, an indirection in variable dereferencing and prevent
openfile from reading directories.

Jan 14, 2025
Fix incorrect error line number issues. unput has
no business managing lineno. Thanks to Ozan Yigit.
Jan 05, 2025
Fix hex detection in is_valid_number.
Fix indirect field specification with non-numeric string
eg. $("foo") in indirect. This is not illegal.
Thanks to Arnold Robbins.
Jan 01, 2025
Fixed openfile to not try to read from a directory.
Thanks to Arnold Robbins.

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