update tarantool sys to 2.11.2

Summary

• fix: update lua imports according to 2.11.2

• chore: update tarantool-sys to 2.11.2

Close picodata/tarantool#27

Ensure that

• New code is covered by tests
• API is documented
• Changelog is up to date
• (if Lua API changed) Lua API version is bumped in luamod.rs
• (if necessary) A follow-up doc issue is created in picodata/docs and linked here