Update leptos requirement from 0.5.1 to 0.6.3

Updates the requirements on [leptos](https://github.com/leptos-rs/leptos) to permit the latest version.
- [Release notes](https://github.com/leptos-rs/leptos/releases)
- [Commits](leptos-rs/leptos@v0.5.1...v0.6.3)

---
updated-dependencies:
- dependency-name: leptos
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Cargo.toml

@@ -12,7 +12,7 @@ derive_more = "0.99.17"
 getrandom = { version = "0.2.8", features = ["js"] }
 gloo-events = "0.2.0"
 gloo-utils = "0.2.0"
-leptos = { version = "0.5.1", features = ["csr"] }
+leptos = { version = "0.6.3", features = ["csr"] }
 leptos-use = "0.8.0"
 rand = { version = "0.8.5", default-features = false, features = ["getrandom"] }
 wasm-bindgen = "0.2.84"