Polish "Use diamond operator where feasible"

See gh-31916

spring-expression/src/test/java/org/springframework/expression/spel/SpelExceptionTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2019 the original author or authors.
+ * Copyright 2002-2023 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -152,7 +152,7 @@ public class SpelExceptionTests {
 		StandardEvaluationContext ctx = new StandardEvaluationContext();
 		ctx.setVariables(new HashMap<>() {
 			{
-				put("anArray", new int[]{1, 2, 3});
+				put("anArray", new int[] {1,2,3});
 			}
 		});
 		boolean result = spelExpression.getValue(ctx, Boolean.class);