Bump blake2 from 0.10.2 to 0.10.4 (#1520)

Bumps [blake2](https://github.com/RustCrypto/hashes) from 0.10.2 to 0.10.4.
- [Release notes](https://github.com/RustCrypto/hashes/releases)
- [Commits](https://github.com/RustCrypto/hashes/commits)

---
updated-dependencies:
- dependency-name: blake2
  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>

fog/ocall_oram_storage/trusted/Cargo.toml

@@ -22,7 +22,7 @@ rand_core = { version = "0.6", default-features = false }
 subtle = { version = "2", default-features = false }
 
 [target.'cfg(any(target_feature = "avx2", target_feature = "avx"))'.dependencies]
-blake2 = { version = "0.10.2", default-features = false, features = ["simd"] }
+blake2 = { version = "0.10.4", default-features = false, features = ["simd"] }
 
 [target.'cfg(not(any(target_feature = "avx2", target_feature = "avx")))'.dependencies]
 blake2 = { version = "0.10.2", default-features = false }