feat: миграция smart-updown на anchor 0.31.1 + solana 2.x (SBPFv3)

- anchor-lang 0.31.1 вместо 2.0-rc/anchor-next (git)
- Address -> Pubkey (state/events/instructions)
- убран #[discrim], добавлен #[derive(InitSpace)] + space=8+INIT_SPACE
- тесты переписаны на solana-program-test 2.x (10 passed)
- сборка SBPFv3 через cargo build-sbf --tools-version v1.57
- deploy успешен в нашу сеть (agave 4.2.2, SBPFv3)

program/programs/smart-updown/Cargo.toml

@@ -15,19 +15,20 @@ cpi = ["no-entrypoint"]
 no-entrypoint = []
 no-log-ix-name = []
 idl-build = []
-profile = ["anchor-v2-testing/profile"]
 
 [dependencies]
-# Once anchor-lang is published to crates.io, swap to: anchor-lang = "2.0.0-rc.1"
-anchor-lang = { git = "https://github.com/otter-sec/anchor.git", branch = "anchor-next" }
-solana-program-log = { version = "1.1", features = ["macro"] }
-wincode = { version = "0.5", features = ["derive"] }
+anchor-lang = "0.31.1"
 
 [dev-dependencies]
-anchor-v2-testing = { git = "https://github.com/otter-sec/anchor.git", branch = "anchor-next" }
-solana-clock = "3.0.1"
-solana-pubkey = "3.0.0"
-
+anchor-lang = "0.31.1"
+solana-program-test = "2.1"
+solana-client = "2.1"
+solana-pubkey = "2.1"
+solana-signer = "2.1"
+solana-keypair = "2.1"
+solana-clock = "2.1"
+solana-transaction = "2.1"
+tokio = { version = "1", features = ["macros", "rt-multi-thread"] }
 
 [lints.rust]
 unexpected_cfgs = { level = "warn", check-cfg = ['cfg(target_os, values("solana"))'] }