Please update Bouncy Castle

[Neustradamus]

Please update Bouncy Castle

• https://www.bouncycastle.org/
• https://www.bouncycastle.org/releasenotes.html
• http://www.bouncycastle.org/latest_releases.html
• https://cve.mitre.org/cgi-bin/cvekey.cgi?keyword=bouncy%20castle
• https://cve.mitre.org/cgi-bin/cvekey.cgi?keyword=bouncycastle
• https://www.cvedetails.com/vulnerability-list/vendor_id-7637/Bouncycastle.html

[generalbytes]

We keep current version of bouncy/spongy castle due to bitcoinj dependency and terminal code dependency. We plan on upgrading it in 2021Q2 where we will rework dependencies into separate projects.

[Neustradamus]

@generalbytes: bitcoinj uses Bouncy Castle 1.68 :)

No Spongy Castle: https://github.com/bitcoinj/bitcoinj/search?q=spongycastle

Bouncy Castle 1.68: https://github.com/bitcoinj/bitcoinj/search?q=bouncycastle