feat: update openchemlib-utils to 8.15.1

Author: lpatiny

eln/libs/OCLUtils.js

@@ -1,5 +1,5 @@
 import OCL from 'openchemlib';
 
-import * as OCLUtils from '../../../../../../../../lib/openchemlib-utils/8.1.0/openchemlib-utils';
+import * as OCLUtils from '../../../../../../../../lib/openchemlib-utils/8.15.1/openchemlib-utils';
 
 export { OCL, OCLUtils };