Dispose the certificate chain elements with the chain

[jashook]

Dispose the certificate chain elements within the chain

This pr is going to fix a series of native memory leaks we have seen due to leaking certificates on the chain at Roblox. (fingers crossed)

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Summary of the changes (Less than 80 chars)

Description

{Detail}

Fixes #{bug number} (in this specific format)

[dotnet-policy-service]

Thanks for your PR, @@jashook. Someone from the team will get assigned to your PR shortly and we'll get it reviewed.