chore(deps): Bump opentelemetry_sdk from 0.21.1 to 0.21.2 (#3830)

Bumps [opentelemetry_sdk](https://github.com/open-telemetry/opentelemetry-rust) from 0.21.1 to 0.21.2.
- [Release notes](https://github.com/open-telemetry/opentelemetry-rust/releases)
- [Commits](open-telemetry/opentelemetry-rust@v0.21.1...v0.21.2)

---
updated-dependencies:
- dependency-name: opentelemetry_sdk
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

util/telemetry/Cargo.toml

@@ -19,4 +19,4 @@ displaydoc = "0.2"
 hostname = "0.3.1"
 opentelemetry = "0.21.0"
 opentelemetry-jaeger = { version = "0.20.0", features = ["reqwest_rustls_collector_client"], optional = true }
-opentelemetry_sdk = "0.21.1"
+opentelemetry_sdk = "0.21.2"