fix wrong keychain migration

src/main/java/org/cryptomator/common/settings/Settings.java

@@ -148,8 +148,8 @@ public class Settings {
 	@SuppressWarnings("deprecation")
 	private void migrateLegacySettings(SettingsJson json) {
 		// migrate renamed keychainAccess
-		if(this.keychainProvider.getValueSafe().equals("org.cryptomator.linux.SecretServiceKeychainAccess")) {
-			this.keychainProvider.setValue("org.cryptomator.linux.GnomeKeyringKeychainAccess");
+		if(this.keychainProvider.getValueSafe().equals("org.cryptomator.linux.keychain.SecretServiceKeychainAccess")) {
+			this.keychainProvider.setValue("org.cryptomator.linux.keychain.GnomeKeyringKeychainAccess");
 		}
 
 		// implicit migration of 1.6.x legacy setting "preferredVolumeImpl":