Prevent that only org.springframework.core.ResolvableType is used

See gh-45635

Signed-off-by: Yanming Zhou <zhouyanming@gmail.com>

src/checkstyle/checkstyle.xml

@@ -16,7 +16,7 @@
 			<property name="illegalPkgs"
 				value="^sun.*, ^org\.apache\.commons\.(?!compress|dbcp2|logging|pool2).*, ^com\.datastax\.oss\.driver\.shaded.*, ^com\.google\.common.*, ^io\.micrometer\.core\.lang.*, ^io\.micrometer\.shaded.*, ^org\.jetbrains\.annotations.*, ^org\.testcontainers\.shaded.*" />
 			<property name="illegalClasses"
-				value="^com\.hazelcast\.util\.Base64, ^org\.junit\.rules\.ExpectedException, ^org\.mockito\.InjectMocks, ^org\.slf4j\.LoggerFactory, ^org.springframework.context.annotation.ScannedGenericBeanDefinition, ^reactor\.core\.support\.Assert, ^(?!org\.springframework\.util\.).*ReflectionUtils"/>
+				value="^com\.hazelcast\.util\.Base64, ^org\.junit\.rules\.ExpectedException, ^org\.mockito\.InjectMocks, ^org\.slf4j\.LoggerFactory, ^org.springframework.context.annotation.ScannedGenericBeanDefinition, ^reactor\.core\.support\.Assert, ^(?!org\.springframework\.util\.).*ReflectionUtils, ^(?!org\.springframework\.core\.).*ResolvableType"/>
 		</module>
 		<module
 			name="com.puppycrawl.tools.checkstyle.checks.imports.IllegalImportCheck">