chore: bump python version (#1415)

Author: amaloney

pyproject.toml

@@ -8,7 +8,7 @@ dynamic = ["version"]
 description = "Data visualization toolchain based on aggregating into a grid"
 readme = "README.md"
 license = { text = "New BSD" }
-requires-python = ">=3.9"
+requires-python = ">=3.10"
 authors = [{ name = "HoloViz developers", email = "developers@holoviz.org" }]
 maintainers = [{ name = "HoloViz developers", email = "developers@holoviz.org" }]
 classifiers = [