chore: update copyright year to 2025 (#91)

posquit0 · web-flow · commit 137a1fafca29 · 2025-09-10T02:32:00.000+09:00
diff --git a/README.md b/README.md
@@ -12,4 +12,4 @@
 
 Provided under the terms of the CC BY-NC 4.0 License.
 
-Copyright © 2021, [Byungjin Park](https://www.posquit0.com).
+Copyright © 2021-2025, [Byungjin Park](https://www.posquit0.com).

Original file line number	Diff line number	Diff line change
`@@ -12,4 +12,4 @@`
`12`	`12`
`13`	`13`	`Provided under the terms of the CC BY-NC 4.0 License.`
`14`	`14`
`15`		`-Copyright © 2021, [Byungjin Park](https://www.posquit0.com).`
	`15`	`+Copyright © 2021-2025, [Byungjin Park](https://www.posquit0.com).`