## Bug description

strtobool is used in several places where it will cause deprecation warning in Pythin 3.10 and error in Python 3.12 since distutils will be removed in Python 3.12 .

Reference : https://www.python.org/dev/peps/pep-0632/

```
rg distutils                     
posthog/api/annotation.py
1:from distutils.util import strtobool

posthog/api/dashboard.py
2:from distutils.util import strtobool

posthog/api/insight.py
1:from distutils.util import strtobool

posthog/models/filters/mixins/common.py
4:from distutils.util import strtobool

posthog/settings.py
17:from distutils.util import strtobool
```

## Expected behavior

It's a good idea to vendor in the function as it's a short one.

## Environment

- [ ] PostHog Cloud
- [ ] self-hosted PostHog, version/commit: _please provide_


#### *Thank you* for your bug report – we love squashing them!

posthog/api/dashboard.py
import secrets
from distutils.util import strtobool
from typing import Any, Dict, Optional
import posthoganalytics
from django.db.models import Model, Prefetch, QuerySet
from django.db.models.query_utils import Q
from django.http import HttpRequest
from django.shortcuts import get_object_or_404
from django.utils.timezone import now
from django.views.decorators.clickjacking import xframe_options_exempt
from rest_framework import authentication, response, serializers, viewsets
from rest_framework.decorators import action
from rest_framework.exceptions import AuthenticationFailed, NotFound
from rest_framework.permissions import IsAuthenticated
from rest_framework.request import Request
from posthog.api.routing import StructuredViewSetMixin
from posthog.api.shared import UserBasicSerializer
from posthog.auth import PersonalAPIKeyAuthentication, PublicTokenAuthentication
from posthog.helpers import create_dashboard_from_template
from posthog.models import Dashboard, DashboardItem, Team
from posthog.permissions import ProjectMembershipNecessaryPermissions
from posthog.utils import get_safe_cache, render_template
class DashboardSerializer(serializers.ModelSerializer):