Bump k256 from 0.10.2 to 0.10.4 (#11249)

Bumps [k256](https://github.com/RustCrypto/elliptic-curves) from 0.10.2 to 0.10.4.
- [Release notes](https://github.com/RustCrypto/elliptic-curves/releases)
- [Commits](https://github.com/RustCrypto/elliptic-curves/compare/k256/v0.10.2...k256/v0.10.4

)

---
updated-dependencies:
- dependency-name: k256
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

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