MAINT: remove pin from sphinxcontrib-youtube

Author: mmcky

environment.yml

@@ -14,7 +14,7 @@ dependencies:
     - jupytext==1.11.2
     - ghp-import==1.1.0
     - jupinx==0.2.3
-    - sphinxcontrib-youtube==1.0.1
+    - sphinxcontrib-youtube
     # Temporary Fixes
     - tornado>=6.1