build(deps): update hvplot requirement from ~=0.8.0 to ~=0.8.1 (#306)

Updates the requirements on [hvplot](https://github.com/holoviz/hvplot) to permit the latest version.
- [Release notes](https://github.com/holoviz/hvplot/releases)
- [Changelog](https://github.com/holoviz/hvplot/blob/master/CHANGELOG.md)
- [Commits](holoviz/hvplot@v0.8.0...v0.8.1)

---
updated-dependencies:
- dependency-name: hvplot
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

requirements-docs.txt

@@ -6,7 +6,7 @@ myst-parser~=0.18.0
 nbsphinx~=0.8
 jinja2<4.0
 geopandas~=0.11.1
-hvplot~=0.8.0
+hvplot~=0.8.1
 matplotlib~=3.5.3
 geojson~=2.5.0
 pygeoif~=0.7