Bump version to 0.6.0 (#39)

- Update version in Cargo.toml from 0.5.0 to 0.6.0
- Update version example in README.md
- Update test values in src/cli.rs

Changes since v0.5.0:
- Remove filename from snapshot API, use key for downloads (#38)

Co-authored-by: Claude Fable 5 <noreply@anthropic.com>

Author: HilliamT

Cargo.lock

@@ -1,6 +1,6 @@
 [package]
 name = "polaris"
-version = "0.5.0"
+version = "0.6.0"
 edition = "2024"
 
 [dependencies]

Cargo.toml

@@ -209,7 +209,7 @@ By default, `polaris update` tries to preserve the current install directory whe
 
 ```bash
 polaris update
-polaris update --version v0.5.0
+polaris update --version v0.6.0
 polaris update --install-dir "$HOME/.local/bin"
 ```
 

README.md

@@ -172,15 +172,15 @@ mod tests {
             "polaris",
             "update",
             "--version",
-            "v0.5.0",
+            "v0.6.0",
             "--install-dir",
             "/tmp/polaris",
         ])
         .expect("cli");
 
         match cli.command {
             Some(Command::Update(args)) => {
-                assert_eq!(args.version.as_deref(), Some("v0.5.0"));
+                assert_eq!(args.version.as_deref(), Some("v0.6.0"));
                 assert_eq!(
                     args.install_dir.as_deref(),
                     Some(std::path::Path::new("/tmp/polaris"))