firefox91: update to 91.11.0

                  Mozilla Foundation Security Advisory 2022-25

Security Vulnerabilities fixed in Firefox ESR 91.11

    #CVE-2022-34479: A popup window could be resized in a way to overlay the
    address bar with web content

    #CVE-2022-34470: Use-after-free in nsSHistory

    #CVE-2022-34468: CSP sandbox header without `allow-scripts` can be bypassed
    via retargeted javascript: URI

    #CVE-2022-34481: Potential integer overflow in ReplaceElementsAt

    #CVE-2022-31744: CSP bypass enabling stylesheet injection

    #CVE-2022-34472: Unavailable PAC file resulted in OCSP requests being
    blocked

    #CVE-2022-34478: Microsoft protocols can be attacked if a user accepts a
    prompt

    #CVE-2022-2200: Undesired attributes could be set as part of prototype
    pollution

    #CVE-2022-34484: Memory safety bugs fixed in Firefox 102 and Firefox ESR
    91.11

(nia)