[UPDATE] www/youtube-dl to 2020.12.31

Hi,

Latest release of the year, OK?

Core
[utils] Accept only supported protocols in url_or_none
[YoutubeDL] Allow format filtering using audio language (#16209)

Extractors
[redditr] Extract all thumbnails (#27503)
[vvvvid] Improve info extraction
[vvvvid] Add support for playlists (#18130, #27574)
[yandexdisk] Extract info from webpage
[yandexdisk] Fix extraction (#17861, #27131)
[yandexvideo] Use old API call as fallback
[yandexvideo] Fix extraction (#25000)
[nbc] Remove CSNNE extractor
[nbc] Fix NBCSport VPlayer URL extraction (#16640)
[aenetworks] Add support for biography.com (#3863)
[uktvplay] Match new video URLs (#17909)
[sevenplay] Detect API errors
[tenplay] Fix format extraction (#26653)
[brightcove] Raise error for DRM protected videos (#23467, #27568)

Index: Makefile
===================================================================
RCS file: /cvs/ports/www/youtube-dl/Makefile,v
retrieving revision 1.224
diff -u -p -u -r1.224 Makefile
--- Makefile 29 Dec 2020 15:23:43 -0000 1.224
+++ Makefile 31 Dec 2020 19:39:48 -0000
@@ -2,7 +2,7 @@

COMMENT = CLI program to download videos from YouTube and other sites

-VERSION = 2020.12.29
+VERSION = 2020.12.31
MODPY_EGG_VERSION = ${VERSION:S/.0/./g}

DISTNAME = youtube-dl-${VERSION}
Index: distinfo
===================================================================
RCS file: /cvs/ports/www/youtube-dl/distinfo,v
retrieving revision 1.203
diff -u -p -u -r1.203 distinfo
--- distinfo 29 Dec 2020 15:23:43 -0000 1.203
+++ distinfo 31 Dec 2020 19:39:48 -0000
@@ -1,2 +1,2 @@
-SHA256 (youtube-dl-2020.12.29.tar.gz) = ay262wRPhnPOWvsaDVCgHkqxViz0a3wdNVezYVwdmcE=
-SIZE (youtube-dl-2020.12.29.tar.gz) = 3246557
+SHA256 (youtube-dl-2020.12.31.tar.gz) = CU74sACp6fyvYk6zFqyNUmQyJGBP34QaFKpppf6fmFk=
+SIZE (youtube-dl-2020.12.31.tar.gz) = 3252801