v3.17.0

Added:

• When rotating tokens, update the token in GHA too
• The variable 'BUILD_WITH_CONDA_DEBUG' (and thus build-locally.py's '--debug' flag) is now honored on macOS.
• Users may now specify a list of packages as part of the remote_ci_setup
  entry in conda-forge.yml to install more packages as part of the setup
  phase.

Changed:

• Drop defaults from channel_sources
• The SPDX identifier list has been updated.
• Updated .ci_support/README for improved clarity.

Fixed:

• Fixed a bug in run_docker_build.sh when finding the value of FEEDSTOCK_ROOT.
  In some cases the cd command had output to stdout which was included in
  FEEDSTOCK_ROOT. Now the value is computed as for THISDIR in the same script,
  with the output of cd redirected to /dev/null.
• Clarify in build-locally.py that setting OSX_SDK_DIR implies agreement to the SDK license.
• Added .ci_support/README to generated file list

Authors:

• Isuru Fernando
• Uwe L. Korn
• Mark Harfouche
• John Kirkham
• Bastian Zimmermann
• Matthias Diener
• Philippe Blain
• Benjamin Tovar