Updated column name.

src/main/java/net/gepafin/tendermanagement/entities/VersionHistoryEntity.java

@@ -31,6 +31,6 @@ public class VersionHistoryEntity extends BaseEntity {
     @Column(name = "USER_ID")
     private Long userId;
 
-    @Column(name = "IS_DELETED")
-    private String isDeleted;
+    @Column(name = "IS_DELETED", nullable = false)
+    private Boolean isDeleted = false;
 }