chore(cargo): bump walkdir from 2.4.0 to 2.5.0

Bumps [walkdir](https://github.com/BurntSushi/walkdir) from 2.4.0 to 2.5.0.
- [Commits](https://github.com/BurntSushi/walkdir/compare/2.4.0...2.5.0)

---
updated-dependencies:
- dependency-name: walkdir
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

deltachat-jsonrpc/Cargo.toml

@@ -26,7 +26,7 @@ yerpc = { version = "0.5.2", features = ["anyhow_expose", "openrpc"] }
 typescript-type-def = { version = "0.5.8", features = ["json_value"] }
 tokio = { version = "1.33.0" }
 sanitize-filename = "0.5"
-walkdir = "2.3.3"
+walkdir = "2.5.0"
 base64 = "0.21"
 
 # optional dependencies