Testnet - v2.1.5

This is a Testnet release. It is NOT recommended for Mainnet Beta.

What's Changed

• Bump version to v2.1.5 by @github-actions in #3819
• v2.1: cli: show max vote credits in vote-account based on TVC activation epoch (backport of #3776) by @mergify in #3780
• v2.1: Update docs with Anza logo (backport of #3851) by @mergify in #3869
• v2.1: Make unified-scheduler use transaction_status_sender in ledger-tool (backport of #3861) by @mergify in #3863
• v2.1: supress hashbrown audit by @yihau in #3920
• v2.1: Ensure that Rc in AccountInfo is not stored in an account (backport of #3471) by @mergify in #3723
• v2.1: CI: Remove memo program from downstream job (backport of #3804) by @mergify in #3865
• v2.1: AccountsDb: make write_accounts_to_cache() never block sending to the bg hasher (backport of #3814) by @mergify in #3875
• v2.1: Refactors get_snapshot_storages() (backport of #3760) by @mergify in #3785
• v2.1: PrioritizationFeeCache: make update() never sleep on the sender channel (backport of #3813) by @mergify in #3818
• v2.1: use create_and_canonicalize_directory for snapshots dir (backport of #3923) by @mergify in #3969
• v2.1: Memory syscalls cannot start in an account and end outside of it (backport of #3744) by @mergify in #3885
• v2.1: bump solana docker image's based image to bookworm (backport of #3977) by @mergify in #3978

Full Changelog: v2.1.4...v2.1.5