Bump asymmetric crypto dependencies; MSRV 1.65 (#490)

Bumps the following dependencies to the latest versions:

- `elliptic-curve` v0.13
- `k256` v0.13
- `p256` v0.13
- `p384` v0.13
- `pbkdf2` v0.12
- `rsa` v0.9.0-pre.0
- `signature` v2

cli/Cargo.toml

@@ -17,7 +17,7 @@ rust-version = "1.56"
 [dependencies]
 clap = { version = "4", features = ["derive"] }
 env_logger = "0.10"
-hex = { package = "base16ct", version = "0.1", features = ["alloc"] }
+hex = { package = "base16ct", version = "0.2", features = ["alloc"] }
 log = "0.4"
 once_cell = "1"
 sha2 = "0.10"