Auto merge of #21472 - CYBAI:update-readme, r=nox
Auto merge of #21472 - CYBAI:update-readme, r=nox

Add `autoconf` as required dependency for macOS

Update README

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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 #21471
- [x] These changes do not require tests

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