chore(deps): update rust crate which to 4.4 (#220)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [which](https://togithub.com/harryfei/which-rs) | dependencies | minor | `4.3` -> `4.4` |

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### Release Notes

<details>
<summary>harryfei/which-rs</summary>

### [`v4.4.0`](https://togithub.com/harryfei/which-rs/compare/4.3.0...4.4.0)

[Compare Source](https://togithub.com/harryfei/which-rs/compare/4.3.0...4.4.0)

</details>

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Author: stackable-bot

Cargo.lock

@@ -19,7 +19,7 @@ kube = { version = "0.78", default-features = false, features = ["client", "open
 lazy_static = "1.4"
 log = "0.4"
 openssl = { version = "0.10.42", features = ["vendored"] } # Must match version from kube
-which = "4.3"
+which = "4.4"
 semver = "1.0"
 serde = { version = "1.0", features = ["derive"]}
 serde_json = "1.0"