build(deps): bump once_cell from 1.20.3 to 1.21.0 (#3748)

Bumps [once_cell](https://github.com/matklad/once_cell) from 1.20.3 to 1.21.0.
- [Changelog](https://github.com/matklad/once_cell/blob/master/CHANGELOG.md)
- [Commits](https://github.com/matklad/once_cell/compare/v1.20.3...v1.21.0)

---
updated-dependencies:
- dependency-name: once_cell
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Cargo.lock

@@ -1284,7 +1284,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "fc2f4eb4bc735547cfed7c0a4922cbd04a4655978c09b54f1f7b228750664c34"
 dependencies = [
  "cfg-if",
- "windows-targets 0.48.5",
+ "windows-targets 0.52.0",
 ]
 
 [[package]]
@@ -2965,9 +2965,9 @@ dependencies = [
 
 [[package]]
 name = "once_cell"
-version = "1.20.3"
+version = "1.21.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "945462a4b81e43c4e3ba96bd7b49d834c6f61198356aa858733bc4acf3cbe62e"
+checksum = "cde51589ab56b20a6f686b2c68f7a0bd6add753d697abf720d63f8db3ab7b1ad"
 
 [[package]]
 name = "opencensus-proto"

linkerd/service-profiles/Cargo.toml

@@ -15,7 +15,7 @@ futures = { version = "0.3", default-features = false }
 http = { workspace = true }
 http-body = { workspace = true }
 linkerd2-proxy-api = { workspace = true, features = ["destination"] }
-once_cell = "1.20"
+once_cell = "1.21"
 prost-types = { workspace = true }
 regex = "1"
 tokio = { version = "1", features = ["macros", "rt", "sync", "time"] }