Update to ytdl-commit-6508688

Make default upload_/release_date a compat_str
6508688e88

Except:
* "[NDR] Overhaul NDR and NJoy extractors" https://github.com/ytdl-org/youtube-dl/pull/30531
    - 01824d275b
    - 39a98b09a2
    - f0a05a55c2
    - 4186e81777

yt_dlp/extractor/arte.py

@@ -12,6 +12,7 @@ from ..utils import (
     int_or_none,
     parse_qs,
     qualities,
+    strip_or_none,
     try_get,
     unified_strdate,
     url_or_none,
@@ -253,3 +254,44 @@ class ArteTVPlaylistIE(ArteTVBaseIE):
         title = collection.get('title')
         description = collection.get('shortDescription') or collection.get('teaserText')
         return self.playlist_result(entries, playlist_id, title, description)
+
+
+class ArteTVCategoryIE(ArteTVBaseIE):
+    _VALID_URL = r'https?://(?:www\.)?arte\.tv/(?P<lang>%s)/videos/(?P<id>[\w-]+(?:/[\w-]+)*)/?\s*$' % ArteTVBaseIE._ARTE_LANGUAGES
+    _TESTS = [{
+        'url': 'https://www.arte.tv/en/videos/politics-and-society/',
+        'info_dict': {
+            'id': 'politics-and-society',
+            'title': 'Politics and society',
+            'description': 'Investigative documentary series, geopolitical analysis, and international commentary',
+        },
+        'playlist_mincount': 13,
+    },
+    ]
+
+    @classmethod
+    def suitable(cls, url):
+        return (
+            not any(ie.suitable(url) for ie in (ArteTVIE, ArteTVPlaylistIE, ))
+            and super(ArteTVCategoryIE, cls).suitable(url))
+
+    def _real_extract(self, url):
+        lang, playlist_id = self._match_valid_url(url).groups()
+        webpage = self._download_webpage(url, playlist_id)
+
+        items = []
+        for video in re.finditer(
+                r'<a\b[^>]*?href\s*=\s*(?P<q>"|\'|\b)(?P<url>https?://www\.arte\.tv/%s/videos/[\w/-]+)(?P=q)' % lang,
+                webpage):
+            video = video.group('url')
+            if video == url:
+                continue
+            if any(ie.suitable(video) for ie in (ArteTVIE, ArteTVPlaylistIE, )):
+                items.append(video)
+
+        title = (self._og_search_title(webpage, default=None)
+                 or self._html_search_regex(r'<title\b[^>]*>([^<]+)</title>', default=None))
+        title = strip_or_none(title.rsplit('|', 1)[0]) or self._generic_title(url)
+
+        return self.playlist_from_matches(items, playlist_id=playlist_id, playlist_title=title,
+                                          description=self._og_search_description(webpage, default=None))