Bump hamt from d0842db to 6bd0599 (#1959)

Bumps [hamt](https://github.com/raviqqe/hamt-rs) from `d0842db` to
`6bd0599`.
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/raviqqe/hamt-rs/commit/6bd0599574e1dca535cf32dd62ef278510354b05"><code>6bd0599</code></a>
Bump criterion from 0.4.0 to 0.5.0 (<a
href="https://redirect.github.com/raviqqe/hamt-rs/issues/44">#44</a>)</li>
<li>See full diff in <a
href="https://github.com/raviqqe/hamt-rs/compare/d0842dbc7fd1b1a884cce850e1038d0018e265b6...6bd0599574e1dca535cf32dd62ef278510354b05">compare
view</a></li>
</ul>
</details>
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