chore: update to version 14.0.11 and align website URLs

packages/util/is/bigInt.d.ts

@@ -0,0 +1,15 @@
+/**
+ * @name isBigInt
+ * @summary Tests for a `BigInt` object instance.
+ * @description
+ * Checks to see if the input object is an instance of `BigInt`
+ * @example
+ * <BR>
+ *
+ * ```javascript
+ * import { isBigInt } from '@pezkuwi/util';
+ *
+ * console.log('isBigInt', isBigInt(123_456n)); // => true
+ * ```
+ */
+export declare function isBigInt(value: unknown): value is bigint;