Update dxr_client requirement from 0.6.2 to 0.7.0

Updates the requirements on [dxr_client](https://github.com/ironthree/dxr) to permit the latest version.
- [Release notes](https://github.com/ironthree/dxr/releases)
- [Changelog](https://github.com/ironthree/dxr/blob/main/CHANGELOG.md)
- [Commits](ironthree/dxr@0.6.2...0.7.0)

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

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

Cargo.toml

@@ -11,7 +11,7 @@ description = "nickserv account verification URL bot"
 
 [dependencies]
 clap = { version = "4.5.9", features = ["derive"] }
-dxr_client = { version = "0.6.2", features = ["reqwest"] }
+dxr_client = { version = "0.7.0", features = ["reqwest"] }
 http = "0.2.12" # warp is stuck on an old version
 http-serde = "1.1.3"
 hyper = "1.4.1"