Updated copyright date

Co-authored-by: Daniel Garnier-Moiroux <daniel.garnier-moiroux@broadcom.com>

Author: ashakirin

mcp-core/src/main/java/io/modelcontextprotocol/util/ToolNameValidator.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2024-2024 the original author or authors.
+ * Copyright 2026-2026 the original author or authors.
  */
 
 package io.modelcontextprotocol.util;