Update library to version 2.9.4

Signed-off-by: Delia-Maria Pavel <delia_maria.pavel@stud.acs.upb.ro>
Reviewed-by: Stefan Jumarea <stefanjumarea02@gmail.com>
Reviewed-by: Razvan Deaconescu <razvan.deaconescu@cs.pub.ro>
Approved-by: Razvan Deaconescu <razvan.deaconescu@cs.pub.ro>
Tested-by: Unikraft CI <monkey@unikraft.io>
GitHub-Closes: unikraft#4

Author: DeliaPavel

Diff for: Makefile.uk

@@ -40,7 +40,7 @@ $(eval $(call addlib_s,libhttp_parser,$(CONFIG_LIBHTTP_PARSER)))
 ################################################################################
 # Sources
 ################################################################################
-LIBHTTP_PARSER_VERSION=2.8.1
+LIBHTTP_PARSER_VERSION=2.9.4
 LIBHTTP_PARSER_URL=https://github.com/nodejs/http-parser/archive/v$(LIBHTTP_PARSER_VERSION).zip
 LIBHTTP_PARSER_SUBDIR=http-parser-$(LIBHTTP_PARSER_VERSION)
 $(eval $(call fetch,libhttp_parser,$(LIBHTTP_PARSER_URL),v$(LIBHTTP_PARSER_VERSION).zip))