chore(readme): add note about openssl when building from source

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[NathanFlurry]

• #253
• #234 👈
• #251
• main

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Merge activity

• Jun 10, 2:49 AM EDT: NathanFlurry added this pull request to the Graphite merge queue.
• Jun 10, 2:54 AM EDT: NathanFlurry merged this pull request with the Graphite merge queue.