gdb/testsuite: fix copyright years in gdb.dwarf2/fission-with-type-unit.{c,exp}

When writing the test, I copied these copyright entries from another
file but forgot to adjust the dates, do that now.

Change-Id: Ie458ad4ec81062b5ef24f78334f3d0920c99b318

gdb/testsuite/gdb.dwarf2/fission-with-type-unit.c

diff --git a/gdb/testsuite/gdb.dwarf2/fission-with-type-unit.c b/gdb/testsuite/gdb.dwarf2/fission-with-type-unit.c
index a0f1b76..42009be 100644
--- a/gdb/testsuite/gdb.dwarf2/fission-with-type-unit.c
+++ b/gdb/testsuite/gdb.dwarf2/fission-with-type-unit.c
@@ -1,6 +1,6 @@
 /* This testcase is part of GDB, the GNU debugger.
 
-   Copyright 2021-2024 Free Software Foundation, Inc.
+   Copyright 2025 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by

gdb/testsuite/gdb.dwarf2/fission-with-type-unit.exp

diff --git a/gdb/testsuite/gdb.dwarf2/fission-with-type-unit.exp b/gdb/testsuite/gdb.dwarf2/fission-with-type-unit.exp
index 2d58260..a1b3bb7 100644
--- a/gdb/testsuite/gdb.dwarf2/fission-with-type-unit.exp
+++ b/gdb/testsuite/gdb.dwarf2/fission-with-type-unit.exp
@@ -1,4 +1,4 @@
-# Copyright 2021-2024 Free Software Foundation, Inc.
+# Copyright 2025 Free Software Foundation, Inc.
 
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by