Update reqwest requirement from 0.11 to 0.12

Updates the requirements on [reqwest](https://github.com/seanmonstar/reqwest) to permit the latest version.
- [Release notes](https://github.com/seanmonstar/reqwest/releases)
- [Changelog](https://github.com/seanmonstar/reqwest/blob/master/CHANGELOG.md)
- [Commits](seanmonstar/reqwest@v0.11.0...v0.12.1)

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

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

xml_schema_derive/Cargo.toml

@@ -24,7 +24,7 @@ heck = "0.4"
 log = "0.4"
 proc-macro2 = "1.0"
 quote = "1.0"
-reqwest = { version = "0.11", default-features = false, features = ["blocking"] }
+reqwest = { version = "0.12", default-features = false, features = ["blocking"] }
 simple_logger = "4"
 syn = { version = "2.0", features = ["visit", "extra-traits"] }
 xml-rs = "0.8"