chore: Fix redb version to the latest version that uses edition 2021 #308

Job	Run time
Android Build Only (aarch64-linux-android)	1m 9s
Cross Build Only (x86_64-unknown-freebsd)	53s
Android Build Only (armv7-linux-androideabi)	1m 11s
cargo deny	28s
Checking docs	1m 42s
Checking fmt	16s
check_semver	2m 12s
Cross Test (i686-unknown-linux-gnu)	1m 33s
clippy_check	3m 6s
codespell	4s
Minimal Supported Rust Version	1m 51s
CI Test Suite / Tests (ubuntu-latest, stable, all)	1m 44s
CI Test Suite / Tests (ubuntu-latest, stable, none)	1m 4s
CI Test Suite / Tests (windows-latest, stable, all, x86_64-pc-windows-msvc)	1s
CI Test Suite / Tests (ubuntu-latest, stable, default)	1m 25s
CI Test Suite / Tests (windows-latest, stable, none, x86_64-pc-windows-msvc)	1s
CI Test Suite / Tests (macOS-arm-latest, stable, all)	1m 35s
CI Test Suite / Tests (windows-latest, stable, default, x86_64-pc-windows-msvc)	1s
CI Test Suite / Tests (macOS-arm-latest, stable, none)	57s
CI Test Suite / Tests (macOS-arm-latest, stable, default)	2m 0s
	23m 13s

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