Update for Bison 3.8+

[kkiningh]

I'd like to update to a more recent version of Bison (3.8 or later.) I've made a small attempt to update them myself here, but this fails with errors related to gnulib.

~/Workspace/rules_bison$ bazel test //tests:genrule_test           
WARNING: Download from https://mirror.bazel.build/github.com/coreutils/gnulib/archive/7818455627c5e54813ac89924b8b67d0bc869146.zip failed: class com.google.devtools.build.lib.bazel.repository.downloader.UnrecoverableHttpException GET returned 404 Not Found
INFO: Analyzed target //tests:genrule_test (0 packages loaded, 0 targets configured).
INFO: Found 1 target and 0 test targets...
ERROR: /private/var/tmp/_bazel_kkiningh/9d4359696dfa5ef018618c8abc478887/external/bison_v3.8.2/gnulib/BUILD.bazel:171:11: Compiling gnulib/lib/asnprintf.c [for host] failed: (Aborted): wrapped_clang failed: error executing command external/local_config_cc/wrapped_clang '-D_FORTIFY_SOURCE=1' -fstack-protector -fcolor-diagnostics -Wall -Wthread-safety -Wself-assign -fno-omit-frame-pointer -g0 -O2 -DNDEBUG '-DNS_BLOCK_ASSERTIONS=1' ... (remaining 35 argument(s) skipped)

Use --sandbox_debug to see verbose messages from the sandbox
In file included from external/bison_v3.8.2/gnulib/lib/asnprintf.c:17:
external/bison_v3.8.2/gnulib/config-darwin/config.h:2:10: fatal error: 'gnulib/lib/config.in.h' file not found
#include "gnulib/lib/config.in.h"
         ^~~~~~~~~~~~~~~~~~~~~~~~
1 error generated.
Error in child process '/usr/bin/xcrun'. 1
Target //tests:genrule_test failed to build
Use --verbose_failures to see the command lines of failed build steps.
INFO: Elapsed time: 0.392s, Critical Path: 0.31s
INFO: 11 processes: 11 internal.
FAILED: Build did NOT complete successfully
FAILED: Build did NOT complete successfully

Any chance the rules could be updated? Or guidance on how to fix the gnulib rules?