Bump polars from 0.18.2 to 0.18.3 (#448)

Bumps [polars](https://github.com/pola-rs/polars) from 0.18.2 to 0.18.3.
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/pola-rs/polars/commit/b98dd79bd6b1154c6148377b5c8065b947141de9"><code>b98dd79</code></a>
python polars 0.18.3 (<a
href="https://redirect.github.com/pola-rs/polars/issues/9397">#9397</a>)</li>
<li><a
href="https://github.com/pola-rs/polars/commit/5bbd9180333bafb5fcde42c58eb49cfe2d5c19bc"><code>5bbd918</code></a>
refactor(python): remove extraneous type (<a
href="https://redirect.github.com/pola-rs/polars/issues/9395">#9395</a>)</li>
<li><a
href="https://github.com/pola-rs/polars/commit/d3e27dfb64285880e541b97df4424be40a76581a"><code>d3e27df</code></a>
feat(rust, python): support all numeric dtypes in serde (<a
href="https://redirect.github.com/pola-rs/polars/issues/9393">#9393</a>)</li>
<li><a
href="https://github.com/pola-rs/polars/commit/75230bebb6aec4f1579aa9682741d081bd537e4c"><code>75230be</code></a>
feat(python): allow easy load/save of polars <code>Config</code> options
to/from file (#...</li>
<li><a
href="https://github.com/pola-rs/polars/commit/8e3926523eaa0ced693c80cc366bb318accb3747"><code>8e39265</code></a>
fix(rust): fix compilation of other rustc versions (<a
href="https://redirect.github.com/pola-rs/polars/issues/9392">#9392</a>)</li>
<li><a
href="https://github.com/pola-rs/polars/commit/5b304b68d5f24a5eeb087465ed09c03e8937b31f"><code>5b304b6</code></a>
feat(rust, python): ensure part of the plan is streaming if aggregati…
(<a
href="https://redirect.github.com/pola-rs/polars/issues/9387">#9387</a>)</li>
<li><a
href="https://github.com/pola-rs/polars/commit/d4fd9afbed0404df6741017571cb7350ff8550a1"><code>d4fd9af</code></a>
test(python): add top-k test for <a
href="https://redirect.github.com/pola-rs/polars/issues/9385">#9385</a>
(<a
href="https://redirect.github.com/pola-rs/polars/issues/9388">#9388</a>)</li>
<li><a
href="https://github.com/pola-rs/polars/commit/9b01675bdacc1bd2dff2b90f9e072dfb0760673a"><code>9b01675</code></a>
feat(rust, python): add relaxed concatenation (<a
href="https://redirect.github.com/pola-rs/polars/issues/9382">#9382</a>)</li>
<li><a
href="https://github.com/pola-rs/polars/commit/b10700f6cb1a9ed327034384d1ab31b479027fef"><code>b10700f</code></a>
perf(rust, python): use row format in streaming join <code>~15%</code>
(<a
href="https://redirect.github.com/pola-rs/polars/issues/9379">#9379</a>)</li>
<li><a
href="https://github.com/pola-rs/polars/commit/8f8218c50acebabae63e49c3f1879fd4dcd08f59"><code>8f8218c</code></a>
fix(python): fix bug when comparing series (<a
href="https://redirect.github.com/pola-rs/polars/issues/9359">#9359</a>)</li>
<li>Additional commits viewable in <a
href="https://github.com/pola-rs/polars/compare/py-0.18.2...py-0.18.3">compare
view</a></li>
</ul>
</details>
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</details>

Author: Marenz

pyproject.toml

@@ -58,7 +58,7 @@ docs-lint = [
 ]
 format = ["black == 23.3.0", "isort == 5.12.0"]
 nox = ["nox == 2023.4.22", "toml == 0.10.2"]
-examples = [ "polars == 0.18.2" ]
+examples = [ "polars == 0.18.3" ]
 pytest = [
   "pytest == 7.3.2",
   "pytest-cov == 4.1.0",