chore: upgrade flatlaf version

src/main/java/app/termora/CombinedKeyIdentityProvider.java

@@ -8,6 +8,7 @@ import java.security.GeneralSecurityException;
 import java.security.KeyPair;
 import java.util.*;
 
+@Deprecated
 public class CombinedKeyIdentityProvider implements KeyIdentityProvider {
 
     private final List<KeyIdentityProvider> providers = new ArrayList<>();

src/main/java/app/termora/MyFlatTabbedPaneUI.java

@@ -14,6 +14,7 @@ import static com.formdev.flatlaf.util.UIScale.scale;
 /**
  * 如果要升级 FlatLaf 需要检查是否兼容
  */
+@Deprecated
 public class MyFlatTabbedPaneUI extends FlatTabbedPaneUI {
     @Override
     protected void paintContentBorder(Graphics g, int tabPlacement, int selectedIndex) {