Update copyright years.
diff --git a/libgfortran/generated/cshift1_8_r10.c b/libgfortran/generated/cshift1_8_r10.c
index acf2e55..e33e775 100644
--- a/libgfortran/generated/cshift1_8_r10.c
+++ b/libgfortran/generated/cshift1_8_r10.c
@@ -1,5 +1,5 @@
 /* Implementation of the CSHIFT intrinsic.
-   Copyright (C) 2017-2022 Free Software Foundation, Inc.
+   Copyright (C) 2017-2023 Free Software Foundation, Inc.
    Contributed by Thomas Koenig <tkoenig@gcc.gnu.org>
 
 This file is part of the GNU Fortran 95 runtime library (libgfortran).