fix(deps): update dependency org.hibernate.orm:hibernate-core to v6.4.0.final (#8907)

Author: renovate-bot

spanner/hibernate/pom.xml

@@ -48,7 +48,7 @@
     <dependency>
       <groupId>org.hibernate.orm</groupId>
       <artifactId>hibernate-core</artifactId>
-      <version>6.3.1.Final</version>
+      <version>6.4.0.Final</version>
     </dependency>
   </dependencies>
   <!-- [END spanner_hibernate_dependencies] -->