Update Pydantic V1 to 1.10.13. 
[build-system]
requires = ["hatchling"]
build-backend = "hatchling.build"

[project]
name = "example_plugin"
version = "0.1.0"

[project.entry-points.pydantic]
my_plugin = "example_plugin:plugin"

[build-system]
requires = ["hatchling"]
build-backend = "hatchling.build"

[project]
name = "example_plugin"
version = "0.1.0"

[project.entry-points.pydantic]
my_plugin = "example_plugin:plugin"
