fix(cache): format sha256 digest manually to resolve trait bound error

Update digest formatting to manually convert the SHA-256 result bytes
to a hexadecimal string. This resolves a compilation error caused by
upgrading the `sha2` crate to v0.11, where `LowerHex` is no longer
implemented for the return type of `finalize()`.

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "mdrs-client-rust"
-version = "2.0.0"
+version = "2.0.1"
 edition = "2024"
 license = "MIT"
 authors = ["Neuroinformatics Unit, RIKEN CBS"]
@@ -14,23 +14,23 @@ path = "src/main.rs"
 clap = { version = "4.5", features = ["derive"] }
 reqwest = { version = "0.12", default-features = false, features = ["json", "multipart", "rustls-tls"] }
 serde = { version = "1.0", features = ["derive"] }
-serde_json = "1.0"
-tokio = { version = "1.37", features = ["full"] }
+serde_json = "1.0.150"
+tokio = { version = "1.52.3", features = ["full"] }
 futures = "0.3"
-dirs = "5.0"
+dirs = "6.0.0"
 anyhow = "1.0.102"
-configparser = "3.1.0"
+configparser = "3.2.0"
 validators = "0.25.3"
-sha2 = "0.10"
-rpassword = "7.0"
+sha2 = "0.11.0"
+rpassword = "7.5.4"
 base64 = "0.22"
 fs2 = "0.4"
 ctrlc = "3"
-os_info = "3"
+os_info = "3.15.0"
 dotenvy = "0.15"
 unicode-normalization = "0.1"
 self-replace = "1"
-tar = "0.4"
+tar = "0.4.46"
 flate2 = "1"
-zip = "2"
+zip = "8.6.0"
 tempfile = "3"

src/cache/digest.rs

@@ -119,5 +119,6 @@ pub fn compute_digest(
     let json_str = python_digest_json(user, access, refresh, labs);
     let mut hasher = Sha256::new();
     hasher.update(json_str.as_bytes());
-    format!("{:x}", hasher.finalize())
+    let result = hasher.finalize();
+    result.iter().map(|b| format!("{:02x}", b)).collect()
 }