Fixed google colab check

google colab changed some things and the check for testing if the notebook was running in colab would fail

Move the running_in_colab into the try catch block

Author: mohseninima

Loudspeaker_Explorer.md

@@ -88,7 +88,11 @@ import pathlib
 import re
 import textwrap
 
-running_in_colab = 'COLAB_GPU' in os.environ
+try:
+  import google.colab
+  running_in_colab = True
+except:
+  running_in_colab = False
 
 if LOUDSPEAKER_EXPLORER_PRERENDERED_GIT_SHA is not None and running_in_colab:
     def read_git_sha(directory):