refactor: swap out jsonschema package for json-schema

src/protocol/errors/validation.ts

@@ -12,8 +12,8 @@
  * You should have received a copy of the GNU General Public License along with
  * this program. If not, see <https://www.gnu.org/licenses/>.
  */
+import {ValidationError} from '@openstapps/core-tools/lib/common';
 import {BAD_REQUEST} from 'http-status-codes';
-import {ValidationError} from 'jsonschema';
 import {SCError} from '../error';
 
 /**