🔒️ Fix issue of infinity as input in pydantic

The use of `"infinity"` as an input to `datetime` and date fields causes an infinite loop in pydantic.

Check here: https://github.com/yezz123/pyngo/security/dependabot/10

pyproject.toml

@@ -32,7 +32,7 @@ classifiers = [
 
 dependencies = [
     "typing-extensions >=3.7.4,<4.5.0",
-    "pydantic >=1.6.2,!=1.7,!=1.7.1,!=1.7.2,!=1.7.3,!=1.8,!=1.8.1,<2.0.0",
+    "pydantic >=1.8.2,<2.0.0",
     "Django >=3.2.0,<4.0.0",
 ]