There is a new pull request by tibequadorian against master on the void-packages repository

https://github.com/tibequadorian/void-packages firefox-esr
https://github.com/void-linux/void-packages/pull/35711

firefox-esr: update to 91.6.0.
[ci skip]

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#### Testing the changes
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A patch file from https://github.com/void-linux/void-packages/pull/35711.patch is attached