Update axum requirement from 0.6.20 to 0.7.5

Updates the requirements on [axum](https://github.com/tokio-rs/axum) to permit the latest version.
- [Release notes](https://github.com/tokio-rs/axum/releases)
- [Changelog](https://github.com/tokio-rs/axum/blob/main/CHANGELOG.md)
- [Commits](tokio-rs/axum@axum-v0.6.20...axum-v0.6.20)

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

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

Author: dependabot[bot]

Cargo.toml

@@ -122,7 +122,7 @@ duration-str = "0.11.2"
 quick-xml = "0.33.0"
 csv = "1.2"
 serde-xml-rs = "0.6"
-axum = "0.6.20"
+axum = "0.7.5"
 hyper-staticfile = "0.9"
 httparse = "1.8"
 sha-1 = "0.10.1"