build(deps): bump poly1305 from 0.9.0-rc.5 to 0.9.0-rc.6 (#470)

Bumps [poly1305](https://github.com/RustCrypto/universal-hashes) from 0.9.0-rc.5 to 0.9.0-rc.6.
- [Commits](RustCrypto/universal-hashes@poly1305-v0.9.0-rc.5...poly1305-v0.9.0-rc.6)

---
updated-dependencies:
- dependency-name: poly1305
  dependency-version: 0.9.0-rc.6
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

Cargo.lock

@@ -30,7 +30,7 @@ cbc = { version = "0.2.0-rc.3", optional = true }
 ctr = { version = "0.10.0-rc.3", optional = true, default-features = false }
 chacha20 = { version = "0.10.0-rc.10", optional = true, default-features = false, features = ["cipher", "legacy"] }
 des = { version = "0.9.0-rc.3", optional = true, default-features = false }
-poly1305 = { version = "0.9.0-rc.5", optional = true, default-features = false }
+poly1305 = { version = "0.9.0-rc.6", optional = true, default-features = false }
 subtle = { version = "2", optional = true, default-features = false }
 zeroize = { version = "1", optional = true, default-features = false }