docs: update copyright year

yoshoku · yoshoku · commit 2925a62312a1 · 2025-01-01T21:15:13.000+09:00
diff --git a/LICENSE.txt b/LICENSE.txt
@@ -1,4 +1,4 @@
-Copyright (c) 2020-2024 Atsushi Tatsuma
+Copyright (c) 2020-2025 Atsushi Tatsuma
 All rights reserved.
 
 Redistribution and use in source and binary forms, with or without

Original file line number	Diff line number	Diff line change
`@@ -1,4 +1,4 @@`
`1`		`-Copyright (c) 2020-2024 Atsushi Tatsuma`
	`1`	`+Copyright (c) 2020-2025 Atsushi Tatsuma`
`2`	`2`	`All rights reserved.`
`3`	`3`
`4`	`4`	`Redistribution and use in source and binary forms, with or without`