fix(bearer-auth): escape regex metacharacters in bearer auth prefix option (#4750)

* fix: escape regex metacharacters in bearer auth prefix option

* Update index.ts

* for nodejs 22

* Fixed to simple approaches

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Co-authored-by: EdamAmex <121654029+EdamAme-x@users.noreply.github.com>
Co-authored-by: Yusuke Wada <yusuke@kamawada.com>