[gcc r9-9880] Daily bump.

[GCC Administrator]

https://gcc.gnu.org/g:b3e620a39658e040aba57c35a2b098f49a21528e

commit r9-9880-gb3e620a39658e040aba57c35a2b098f49a21528e
Author: GCC Administrator <gccadmin@gcc.gnu.org>
Date:   Tue Dec 21 00:18:45 2021 +0000

    Daily bump.

Diff:
---
 gcc/DATESTAMP | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gcc/DATESTAMP b/gcc/DATESTAMP
index 40a9145a075..f7740a47ec5 100644
--- a/gcc/DATESTAMP
+++ b/gcc/DATESTAMP
@@ -1 +1 @@
-20211220
+20211221