Merge branch '2020.12-rc' into bug/9656-purify-video-embed

diff --cc src/Content/Text/BBCode.php
index e0975f9f0be5840ddc82609749b876ec54bc193a,d238e265eddf8bad85b564d4ebca61bf119cf84e..dd62c5d84140772f44d1570ec51f2c407e46e30a
--- 1/src/Content/Text/BBCode.php
--- 2/src/Content/Text/BBCode.php
+++ b/src/Content/Text/BBCode.php
@@@ -50,7 -50,7 +50,7 @@@ use Friendica\Util\XML
  class BBCode
  {
        // Update this value to the current date whenever changes are made to BBCode::convert
-       const VERSION = '2020-12-18';
 -      const VERSION = '2020-12-18-small-emojis';
++      const VERSION = '2020-12-18-video-embeds';
  
        const INTERNAL = 0;
        const API = 2;