maint: add lib/stdbit.h to .gitignore

Following recent gnulib update

diff --git a/.gitignore b/.gitignore
index 955dd600c8d160ee198d90b6f06ed2ac0b329885..22d6b01df86f3fd4828248ed28174aac956bbb72 100644 (file)
--- a/.gitignore
+++ b/.gitignore
@@ -105,6 +105,7 @@
 /lib/stamp-h1
 /lib/stdarg.h
 /lib/stdbool.h
+/lib/stdbit.h
 /lib/stdckdint.h
 /lib/stddef.h
 /lib/stdint.h