SPL Stake Pool - v2.0.0

NOTE: The program built from this release is not deployed to any network, and there are no plans to deploy it at the moment.

What's new

Breaking

• Update to Solana v2 crates

Other

• Remove usage of VoteStateVersions::vote_state_size_of (#6549) by @AshwinSekar
• Update security and audit info (#5945) by @joncinque
• Make update_validator_list_balance() more ergonomic (#6058) by @billythedummy
• Fix flaky test (#6151) by @joncinque
• Fix updating blockhash, force a new one (#6169) by @joncinque
• Don't send UpdateValidatorListBalance transactions for subslices of validator list that have already been updated (#6059) by @billythedummy
• Ceiling all fee calculations (HAL-01) (#6153) by @joncinque

Miscellaneous Tasks

• Bump borsh from 1.2.1 to 1.4.0 (#6520) by @dependabot[bot]
• Bump serde from 1.0.197 to 1.0.198 (#6589) by @dependabot[bot]
• Bump serde from 1.0.198 to 1.0.199 (#6647) by @dependabot[bot]
• Bump borsh from 1.4.0 to 1.5.0 (#6659) by @dependabot[bot]
• Bump serde from 1.0.199 to 1.0.200 (#6679) by @dependabot[bot]
• Bump serde from 1.0.200 to 1.0.201 (#6706) by @dependabot[bot]
• Bump bytemuck from 1.15.0 to 1.16.0 (#6729) by @dependabot[bot]
• Bump serde from 1.0.201 to 1.0.202 (#6733) by @dependabot[bot]
• Bump serde from 1.0.202 to 1.0.203 (#6763) by @dependabot[bot]
• Bump borsh from 1.5.0 to 1.5.1 (#6778) by @dependabot[bot]
• Bump proptest from 1.4.0 to 1.5.0 (#6899) by @dependabot[bot]
• Bump serde from 1.0.193 to 1.0.194 (#6047) by @dependabot[bot]
• Bump num_enum from 0.7.1 to 0.7.2 (#6072) by @dependabot[bot]
• Bump serde from 1.0.194 to 1.0.195 (#6075) by @dependabot[bot]
• Bump bytemuck from 1.14.0 to 1.14.1 (#6179) by @dependabot[bot]