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Updated octokit to last v16 version, and plugins to last pre-3.0 versions. Octokit v17 introduces breaking changes across almost every call, deprecating most calls used in this script. Deprecation messages will be incredibly common in the script until this is fixed and will polute logs. Updated code around team management to use pre-v17 code that was erroneously included. Included a small JSON snip in the test folder that contains development data pointed at the EclipseFdn sandbox for easy access.

Signed-off-by: Martin Lowe martin.lowe@eclipse-foundation.org