chore: bump csv from 1.1.3 to 1.1.6 (#18261)

Bumps [csv](https://github.com/BurntSushi/rust-csv) from 1.1.3 to 1.1.6.
- [Release notes](https://github.com/BurntSushi/rust-csv/releases)
- [Commits](https://github.com/BurntSushi/rust-csv/compare/1.1.3...1.1.6)

---
updated-dependencies:
- dependency-name: csv
  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>

ledger-tool/Cargo.toml

@@ -13,7 +13,7 @@ documentation = "https://docs.rs/solana-ledger-tool"
 bs58 = "0.4.0"
 bytecount = "0.6.2"
 clap = "2.33.1"
-csv = "1.1.3"
+csv = "1.1.6"
 futures = "0.3.15"
 futures-util = "0.3.5"
 histogram = "*"