chore(deps): update brotli requirement from 5.0 to 6.0 (#274)

Updates the requirements on [brotli](https://github.com/dropbox/rust-brotli) to permit the latest version.
- [Release notes](https://github.com/dropbox/rust-brotli/releases)
- [Commits](dropbox/rust-brotli@5.0.0...6.0.0)

---
updated-dependencies:
- dependency-name: brotli
  dependency-type: direct:production
...

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

Cargo.toml

@@ -32,7 +32,7 @@ zstdmt = ["zstd", "zstd-safe/zstdmt"]
 deflate64 = ["dep:deflate64"]
 
 [dependencies]
-brotli = { version = "5.0", optional = true }
+brotli = { version = "6.0", optional = true }
 bzip2 = { version = "0.4.4", optional = true }
 flate2 = { version = "1.0.13", optional = true }
 futures-core = { version = "0.3", default-features = false }