Log Message:
firefox91: Update to 91.5.0

Changelog:
Security fixes:
#CVE-2022-22746: Calling into reportValidity could have lead to fullscreen
#CVE-2022-22743: Browser window spoof using fullscreen mode
#CVE-2022-22742: Out-of-bounds memory access when inserting text in edit mode
#CVE-2022-22741: Browser window spoof using fullscreen mode
#CVE-2022-22740: Use-after-free of ChannelEventQueue::mOwner
#CVE-2022-22738: Heap-buffer-overflow in blendGaussianBlur
#CVE-2022-22737: Race condition when playing audio files
#CVE-2021-4140: Iframe sandbox bypass with XSLT
#CVE-2022-22748: Spoofed origin on external protocol launch dialog
#CVE-2022-22745: Leaking cross-origin URLs through securitypolicyviolation
 event
#CVE-2022-22744: The 'Copy as curl' feature in DevTools did not fully escape
 website-controlled data, potentially leading to command injection
#CVE-2022-22747: Crash when handling empty pkcs7 sequence
#CVE-2022-22739: Missing throttling on external protocol launch dialog
#CVE-2022-22751: Memory safety bugs fixed in Firefox 96 and Firefox ESR 91.5