Testnet - v2.1.1

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

What's Changed

• Bump version to v2.1.1 by @github-actions in #3343
• v2.1: Revert "remove test-only bool arg from calculate_fee (#3211)" (backport of #3367) by @mergify in #3373
• v2.1: Adds buffers and cached bytes to memory-stats datapoint (backport of #3381) by @mergify in #3385
• v2.1: Fix incorrect default for num AccountsIndex flush threads (backport of #3371) by @mergify in #3378
• v2.1 Add CODEOWNERS to v2.1 to restrict backports by @willhickey in #3356
• v2.1: sdk: Extract solana-sysvar-id crate (backport of #3309) by @mergify in #3352
• v2.1: add missing description for solana-lattice-hash (backport of #3358) by @mergify in #3363
• v2.1: publish solana-svm-conformance (backport of #3359) by @mergify in #3362
• v2.1: Runs accounts delta hash calculation in thread pool (backport of #3389) by @mergify in #3391
• v2.1: Use MaybeUninit properly in streamer::recv_mmsg() (backport of #3348) by @mergify in #3403
• v2.1: CI: Remove crate patches for downstream SPL jobs (backport of #3416) by @mergify in #3421
• v2.1: Disallow --rocksdb-shred-compaction fifo in the validator (backport of #3451) by @mergify in #3464
• svm: introduce filter_executable_us metric (#3472) by @alessandrod in #3482
• v2.1: make new_from_bank to be only for tests (backport of #3455) by @mergify in #3484
• v2.1: Store epoch in MaxAge (backport of #3485) by @mergify in #3502
• v2.1: program-runtime: double program cache size (backport of #3481) by @mergify in #3492
• v2.1: Disable downstream SPL jobs by @joncinque in #3532
• v2.1: Fix - SVM account_loader tests (backport of #3448) by @mergify in #3520
• v2.1: Revert - #879 and #768 (backport of #3521) by @mergify in #3544
• v2.1: Feature - disable account loader special case (backport of #3548) by @mergify in #3552
• v2.1: svm: avoid rent collection in loader size test (backport of #3555) by @mergify in #3560
• v2.1: simplify forward packet batches (backport of #3642) by @mergify in #3649
• v2.1: SIMD-0075: Precompile for Secp256r1 (backport of #3152) by @mergify in #3662

Full Changelog: v2.1.0...v2.1.1