feat: add IsConcatSpreadableSymbol to namespace

---
type: pre_commit_static_analysis_report
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---

Author: kgryte

lib/node_modules/@stdlib/symbol/lib/index.js

@@ -54,6 +54,15 @@ setReadOnly( ns, 'AsyncIteratorSymbol', require( '@stdlib/symbol/async-iterator'
 */
 setReadOnly( ns, 'Symbol', require( '@stdlib/symbol/ctor' ) );
 
+/**
+* @name IsConcatSpreadableSymbol
+* @memberof ns
+* @readonly
+* @type {(symbol|null)}
+* @see {@link module:@stdlib/symbol/is-concat-spreadable}
+*/
+setReadOnly( ns, 'IsConcatSpreadableSymbol', require( '@stdlib/symbol/is-concat-spreadable' ) );
+
 /**
 * @name IteratorSymbol
 * @memberof ns