Update attohttpc requirement from 0.18.0 to 0.19.0 in /crates/volta-core

Updates the requirements on [attohttpc](https://github.com/sbstp/attohttpc) to permit the latest version.
- [Release notes](https://github.com/sbstp/attohttpc/releases)
- [Commits](sbstp/attohttpc@v0.18.0...v0.19.0)

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

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

Author: dependabot[bot]

crates/volta-core/Cargo.toml

@@ -48,7 +48,7 @@ double-checked-cell = "2.1.0"
 dunce = "1.0.2"
 ci_info = "0.14.4"
 hyperx = "1.4.0"
-attohttpc = { version = "0.18.0", features = ["json"] }
+attohttpc = { version = "0.19.0", features = ["json"] }
 chain-map = "0.1.0"
 indexmap = "1.8.1"
 retry = "1.3.1"