gnulib: update
We now build cleanly even if libtextstyle is not available.
See https://lists.gnu.org/r/bug-bison/2022-07/msg00002.html.
diff --git a/bootstrap.conf b/bootstrap.conf
index 6e9dd1c..d33e9c8 100644
--- a/bootstrap.conf
+++ b/bootstrap.conf
@@ -79,7 +79,7 @@
--keyword=YY_ \\\
'
-gnulib_tool_option_extras='--symlink --conditional-dependencies --makefile-name=gnulib.mk --automake-subdir --po-base=gnulib-po --po-domain=bison'
+gnulib_tool_option_extras='--symlink --conditional-dependencies --makefile-name=gnulib.mk --automake-subdir --automake-subdir-tests --po-base=gnulib-po --po-domain=bison'
bootstrap_post_import_hook()
{
diff --git a/gnulib b/gnulib
index 1803e3e..76c7703 160000
--- a/gnulib
+++ b/gnulib
@@ -1 +1 @@
-Subproject commit 1803e3ebe5e956dda2d3483bc16b88f57f66a4df
+Subproject commit 76c7703cb2e9e0e803d1296618d8ab9e86e13d6c
