[core] Fix support for upcoming Python 3.12 (#8130)

This also adds the following test runners:
- `3.12-dev` on `ubuntu-latest`
- `3.12-dev` on `windows-latest`
- `pypy-3.10` on `ubuntu-latest`

Authored by: Grub4K

yt_dlp/extractor/aws.py

@@ -12,7 +12,7 @@ class AWSIE(InfoExtractor):  # XXX: Conventionally, base classes should end with
 
     def _aws_execute_api(self, aws_dict, video_id, query=None):
         query = query or {}
-        amz_date = datetime.datetime.utcnow().strftime('%Y%m%dT%H%M%SZ')
+        amz_date = datetime.datetime.now(datetime.timezone.utc).strftime('%Y%m%dT%H%M%SZ')
         date = amz_date[:8]
         headers = {
             'Accept': 'application/json',

yt_dlp/extractor/goplay.py

@@ -383,9 +383,9 @@ class AwsIdp:
         months = [None, 'Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec']
         days = ['Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun']
 
-        time_now = datetime.datetime.utcnow()
+        time_now = datetime.datetime.now(datetime.timezone.utc)
         format_string = "{} {} {} %H:%M:%S UTC %Y".format(days[time_now.weekday()], months[time_now.month], time_now.day)
-        time_string = datetime.datetime.utcnow().strftime(format_string)
+        time_string = time_now.strftime(format_string)
         return time_string
 
     def __str__(self):

yt_dlp/extractor/motherless.py

@@ -151,7 +151,7 @@ class MotherlessIE(InfoExtractor):
                     'd': 'days',
                 }
                 kwargs = {_AGO_UNITS.get(uploaded_ago[-1]): delta}
-                upload_date = (datetime.datetime.utcnow() - datetime.timedelta(**kwargs)).strftime('%Y%m%d')
+                upload_date = (datetime.datetime.now(datetime.timezone.utc) - datetime.timedelta(**kwargs)).strftime('%Y%m%d')
 
         comment_count = len(re.findall(r'''class\s*=\s*['"]media-comment-contents\b''', webpage))
         uploader_id = self._html_search_regex(

yt_dlp/extractor/panopto.py

@@ -1,7 +1,7 @@
 import calendar
 import json
 import functools
-from datetime import datetime
+from datetime import datetime, timezone
 from random import random
 
 from .common import InfoExtractor
@@ -243,7 +243,7 @@ class PanoptoIE(PanoptoBaseIE):
         invocation_id = delivery_info.get('InvocationId')
         stream_id = traverse_obj(delivery_info, ('Delivery', 'Streams', ..., 'PublicID'), get_all=False, expected_type=str)
         if invocation_id and stream_id and duration:
-            timestamp_str = f'/Date({calendar.timegm(datetime.utcnow().timetuple())}000)/'
+            timestamp_str = f'/Date({calendar.timegm(datetime.now(timezone.utc).timetuple())}000)/'
             data = {
                 'streamRequests': [
                     {