chore(deps): update askama_actix requirement from 0.14 to 0.15

Updates the requirements on [askama_actix](https://github.com/rinja-rs/rinja) to permit the latest version.
- [Release notes](https://github.com/rinja-rs/rinja/releases)
- [Commits](askama-rs/askama@v0.14.0...v0.15.0)

---
updated-dependencies:
- dependency-name: askama_actix
  dependency-version: 0.15.0+deprecated
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

Cargo.toml

@@ -14,7 +14,7 @@ serde_json = "1"
 rusqlite = { version = "0.31", features = ["bundled"] }
 chrono = { version = "0.4", features = ["serde"] }
 askama = "0.12"
-askama_actix = "0.14"
+askama_actix = "0.15"
 dotenvy = "0.15"
 env_logger = "0.11"
 log = "0.4"