Update bincode requirement from 1.3 to 2.0

Updates the requirements on [bincode](https://github.com/bincode-org/bincode) to permit the latest version.
- [Release notes](https://github.com/bincode-org/bincode/releases)
- [Commits](https://github.com/bincode-org/bincode/compare/v1.3.0...v2.0.1)

---
updated-dependencies:
- dependency-name: bincode
  dependency-version: 2.0.1
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Cargo.toml

@@ -39,7 +39,7 @@ aes-gcm = "0.10"
 anyhow = "1.0"
 argon2 = "0.5"
 base64 = "0.21"
-bincode = "1.3"
+bincode = "2.0"
 blake3 = "1.3"
 hex = "0.4"
 image = "0.24"