Revert "Update Rust crate clickhouse to 0.12.0 (#17034)" (#17086)

This PR reverts the `clickhouse` upgrade from #17034.

After testing in staging I'm seeing errors when trying to write events
to Clickhouse. Going to revert so we can investigate.

This reverts commit 505675c.

Release Notes:

- N/A

Cargo.toml

@@ -329,7 +329,7 @@ cargo_metadata = "0.18"
 cargo_toml = "0.20"
 chrono = { version = "0.4", features = ["serde"] }
 clap = { version = "4.4", features = ["derive"] }
-clickhouse = "0.12.0"
+clickhouse = "0.11.6"
 cocoa = "0.26"
 core-foundation = "0.9.3"
 core-foundation-sys = "0.8.6"