Auto merge of #21102 - asajeffrey:mozjs-sys-0.51.3, r=mbrubeck

Updated mozjs_sys to v0.51.3

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Allows building servo for target `i686-linux-android`.

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- [X] `./mach build -d` does not report any errors
- [X] `./mach test-tidy` does not report any errors
- [X] These changes fix #21093
- [X] These changes do not require tests because deperndency update

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