core: bump serde_with from 3.20.0 to 3.21.0 (#23029)

Bumps [serde_with](https://github.com/jonasbb/serde_with) from 3.20.0 to 3.21.0.
- [Release notes](https://github.com/jonasbb/serde_with/releases)
- [Commits](https://github.com/jonasbb/serde_with/compare/v3.20.0...v3.21.0)

---
updated-dependencies:
- dependency-name: serde_with
  dependency-version: 3.21.0
  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

@@ -3398,9 +3398,9 @@ dependencies = [
 
 [[package]]
 name = "serde_with"
-version = "3.20.0"
+version = "3.21.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e72c1c2cb7b223fafb600a619537a871c2818583d619401b785e7c0b746ccde2"
+checksum = "76a5c54c7310e7b8b9577c286d7e399ddd876c3e12b3ed917a8aabc4b96e9e8c"
 dependencies = [
  "base64 0.22.1",
  "bs58",

Cargo.toml

@@ -80,7 +80,7 @@ sentry = { version = "= 0.48.2", default-features = false, features = [
 serde = { version = "= 1.0.228", features = ["derive"] }
 serde_json = "= 1.0.150"
 serde_repr = "= 0.1.20"
-serde_with = { version = "= 3.20.0", default-features = false, features = [
+serde_with = { version = "= 3.21.0", default-features = false, features = [
   "base64",
 ] }
 sqlx = { version = "= 0.8.6", default-features = false, features = [