build(deps): bump pydantic from 1.4 to 1.5

Bumps [pydantic](https://github.com/samuelcolvin/pydantic) from 1.4 to 1.5.
- [Release notes](https://github.com/samuelcolvin/pydantic/releases)
- [Changelog](https://github.com/samuelcolvin/pydantic/blob/master/HISTORY.md)
- [Commits](pydantic/pydantic@v1.4...v1.5)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

requirements.txt

@@ -1,3 +1,3 @@
 
 honeybee-schema==1.25.5
-pydantic==1.4
+pydantic==1.5