Conda - environment.yml remove synchthing; add OS X arm

conda/environment.yml

@@ -20,10 +20,6 @@ dependencies:
   - jupyterlab>=3.0,<4.0
   # This provides memory usage stats on JupyterLab and classic notebook
   - jupyter-resource-usage==0.7.1
-  # https://syncthing.net/ provides a dropbox-like interface for syncing directories across users,
-  # hubs and machines. Used along with `jupyter-syncthing-proxy`.
-  - jupyter-syncthing-proxy==1.0.3
-  - syncthing==1.22.1
   # gh-scoped-creds allows users to securely push to GitHub from their repo.
   # https://blog.jupyter.org/securely-pushing-to-github-from-a-jupyterhub-3ee42dfdc54f has
   # some more information
@@ -131,3 +127,4 @@ dependencies:
 platforms:
   - linux-64
   - osx-64
+  - osx-arm64