maint: update for gnulib's recent update-copyright changes

[bison.git] / gnulib

diff --git a/gnulib b/gnulib
index e98f3a0b6bb91ab0a1bc71b66b92611f9c3d9546..3ef64012bf653379fda629f5a6b619be4c1f2e69 160000 (submodule)
--- a/gnulib
+++ b/gnulib
@@ -1 +1 @@
-Subproject commit e98f3a0b6bb91ab0a1bc71b66b92611f9c3d9546
+Subproject commit 3ef64012bf653379fda629f5a6b619be4c1f2e69