build(deps): update base64-url requirement in /az-cvm-vtpm (#53)

Updates the requirements on [base64-url](https://github.com/magiclen/base64-url) to permit the latest version.
- [Commits](magiclen/base64-url@v2.0.0...v3.0.0)

---
updated-dependencies:
- dependency-name: base64-url
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

az-cvm-vtpm/az-tdx-vtpm/Cargo.toml

@@ -17,7 +17,7 @@ path = "src/main.rs"
 
 [dependencies]
 az-cvm-vtpm = { path = "..", version = "0.5.3" }
-base64-url = "2.0.0"
+base64-url = "3.0.0"
 bincode.workspace = true
 serde.workspace = true
 serde_json.workspace = true