Combine Public Keys

Highlights

• Initial PublicKey Combine API by @csjones with contributions from @zeugmaster in #439

What's Changed

• Updating manifest file by @csjones in #427
• Bump swift from 5.8.1 to 5.9.0 by @dependabot in #435
• Bump Submodules/secp256k1 from ee7aaf2 to b314cf2 by @dependabot in #436
• Bump Submodules/swift-crypto from 629f0b6 to b51f1d6 by @dependabot in #437
• Bump Lefthook version by @csjones in #438
• Bump Submodules/swift-crypto from b51f1d6 to c4f2e99 by @dependabot in #441
• Bump Submodules/secp256k1-zkp from b911b3c to d575ef9 by @dependabot in #442
• Bump Submodules/swift-crypto from c4f2e99 to fade397 by @dependabot in #444
• Bump swift from 5.9.0 to 5.9.1 by @dependabot in #445
• Bump Submodules/secp256k1 from b314cf2 to 1f1bb78 by @dependabot in #446
• Bump Submodules/swift-crypto from fade397 to 7644bdc by @dependabot in #447
• Bump Submodules/swift-crypto from 7644bdc to 3df7fa0 by @dependabot in #448
• Bump Submodules/secp256k1-zkp from d575ef9 to 2192e9d by @dependabot in #449
• Bump Submodules/secp256k1 from 1f1bb78 to 40f50d0 by @dependabot in #451
• Bump Submodules/swift-crypto from 3df7fa0 to f4b21db by @dependabot in #450
• Bump Submodules/secp256k1 from 40f50d0 to c891c5c by @dependabot in #452

Full Changelog: 0.13.0...0.14.0