Update axum-login requirement from 0.14.0 to 0.15.0

Updates the requirements on [axum-login](https://github.com/maxcountryman/axum-login) to permit the latest version.
- [Release notes](https://github.com/maxcountryman/axum-login/releases)
- [Changelog](https://github.com/maxcountryman/axum-login/blob/main/CHANGELOG.md)
- [Commits](maxcountryman/axum-login@v0.14.0...v0.15.0)

---
updated-dependencies:
- dependency-name: axum-login
  dependency-type: direct:production
...

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

Cargo.toml

@@ -56,7 +56,7 @@ askama_axum = { version = "0.4.0", default-features = false, features = ["urlenc
 async-trait = "0.1.78"
 axum = { version = "0.7.4", features = ["form", "http1", "http2", "macros", "tokio", "tower-log"] }
 axum-client-ip = "0.5.1"
-axum-login = "0.14.0"
+axum-login = "0.15.0"
 axum-messages = "0.5.0"
 base64 = "0.22.0"
 bincode = "1.3.3"