feat: upgrade to Spring Boot 3.4.0 (#168)

`hibernate-core` is upgraded from `6.4.x` to `6.6.x`, which contains an important breaking change regarding type casts: 

> `Expression.as()` doesn’t do anymore a real type conversions, it’s just an unsafe typecast on the Expression object itself.

Reference: https://docs.jboss.org/hibernate/orm/6.6/migration-guide/migration-guide.html#criteria-query

Note: this change is not compatible with older versions of Spring Boot, as `JpaExpression.cast()` was added in `hibernate-core@6.6`.

Related: #166

Author: gianluca1606

pom.xml

@@ -64,7 +64,7 @@
 			<dependency>
 				<groupId>org.springframework.boot</groupId>
 				<artifactId>spring-boot-dependencies</artifactId>
-				<version>3.2.4</version>
+				<version>3.4.0</version>
 				<type>pom</type>
 				<scope>import</scope>
 			</dependency>

src/main/java/org/springframework/data/jpa/datatables/GlobalFilter.java

@@ -9,6 +9,7 @@
 import jakarta.persistence.criteria.Expression;
 import jakarta.persistence.criteria.From;
 import jakarta.persistence.criteria.Predicate;
+import org.hibernate.query.criteria.JpaExpression;
 
 /**
  * Filter which creates a basic "WHERE ... LIKE ..." clause
@@ -42,7 +43,7 @@ private Expression<String> castAsStringIfNeeded(Expression<?> expression) {
         if (expression.getJavaType() == String.class) {
             return (Expression<String>) expression;
         } else {
-            return expression.as(String.class);
+            return ((JpaExpression<?>) expression).cast(String.class);
         }
     }