chore: use dmypy instead of mypy in pre-commit (#1023)

Author: georgeh0

.gitignore

@@ -21,3 +21,6 @@ examples/**/eval_*
 
 /.vscode
 /*.session.sql
+
+# mypy daemon environment
+.dmypy.json

.pre-commit-config.yaml

@@ -49,7 +49,7 @@ repos:
 
         - id: mypy-check
           name: mypy type check
-          entry: mypy --cache-fine-grain
+          entry: dmypy run python
           language: system
           types: [python]
           pass_filenames: false