Update base64 requirement from 0.22 to 0.23 in /azure_devops_rust_api

Updates the requirements on [base64](https://github.com/marshallpierce/rust-base64) to permit the latest version.
- [Changelog](https://github.com/marshallpierce/rust-base64/blob/master/RELEASE-NOTES.md)
- [Commits](marshallpierce/rust-base64@v0.22.0...v0.23.0)

---
updated-dependencies:
- dependency-name: base64
  dependency-version: 0.23.0
  dependency-type: direct:production
...

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

Author: dependabot[bot]

azure_devops_rust_api/Cargo.toml

@@ -26,7 +26,7 @@ serde = { version = "1", features = ["derive"] }
 serde_json = "1"
 bytes = "1"
 futures = "0.3"
-base64 = "0.22"
+base64 = "0.23"
 time = "0.3"
 async-trait = "0.1"
 tracing = "0.1"