eslint: spotbugs fix

Author: simschla

lib/src/main/java/com/diffplug/spotless/npm/EslintTypescriptConfig.java

@@ -27,6 +27,8 @@
 
 public class EslintTypescriptConfig extends EslintConfig {
 
+	private static final long serialVersionUID = -126864670181617006L;
+
 	@SuppressFBWarnings("SE_TRANSIENT_FIELD_NOT_RESTORED")
 	@Nullable
 	private final transient File typescriptConfigPath;