Suppress NullAway checks in tests for Maven plugin

See gh-47263

build-plugin/spring-boot-maven-plugin/src/test/java/org/springframework/boot/maven/CommandLineBuilderTests.java

@@ -49,6 +49,7 @@ class CommandLineBuilderTests {
 	public static final String CLASS_NAME = ClassWithMainMethod.class.getName();
 
 	@Test
+	@SuppressWarnings("NullAway") // Maven can't deal with @Nullable arrays / varargs
 	void buildWithNullJvmArgumentsIsIgnored() {
 		assertThat(CommandLineBuilder.forMainClass(CLASS_NAME).withJvmArguments((String[]) null).build())
 			.containsExactly(CLASS_NAME);
@@ -80,6 +81,7 @@ class CommandLineBuilderTests {
 	}
 
 	@Test
+	@SuppressWarnings("NullAway") // Maven can't deal with @Nullable arrays / varargs
 	void buildWithNullArgumentsIsIgnored() {
 		assertThat(CommandLineBuilder.forMainClass(CLASS_NAME).withArguments((String[]) null).build())
 			.containsExactly(CLASS_NAME);