Implement update check functionality with version comparison and archive listing

- Added `check.rs` to handle package update checks, including logic for determining available updates from remote git repositories and archive listings.
- Introduced `versions.rs` to manage version patterns, comparison logic, and extraction of candidate versions from git refs and archive listings.
- Implemented `hex.rs` for encoding byte arrays to lowercase hexadecimal strings.

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "depot"
-version = "0.33.1"
+version = "0.34.0"
 edition = "2024"
 
 [lints.rust]
@@ -19,11 +19,11 @@ rusqlite = "0.39.0"
 semver = "1.0.27"
 serde = { version = "1.0.228", features = ["derive"] }
 yaml-rust2 = "0.11.0"
-sha2 = "0.10.9"
+sha2 = "0.11.0"
 tar = "0.4.45"
 tempfile = "=3.27.0"
 thiserror = "2.0.18"
-toml = "1.0.6"
+toml = "1.1.0+spec-1.1.0"
 url = "2.5.8"
 walkdir = "2.5.0"
 xz2 = "0.1.7"
@@ -38,7 +38,7 @@ fd-lock = "4.0.4"
 reqwest = { version = "0.13.2", default-features = false, features = ["blocking", "native-tls"] }
 filetime = "0.2.27"
 clap_complete = "4.6.0"
-clap_mangen = "0.2.33"
+clap_mangen = "0.3.0"
 sys-mount = { version = "3.1.0", default-features = false }
 time = { version = "0.3.47", features = ["formatting", "parsing"] }
 b2sum-rust = "0.3.0"
@@ -46,7 +46,7 @@ serde_ignored = "0.1.14"
 lz4_flex = "0.13.0"
 lzma-rust2 = "0.16.2"
 signal-hook = "0.4.3"
-sha1 = "0.10.6"
+sha1 = "0.11.0"
 
 [dev-dependencies]
 tempfile = "=3.27.0"