update contact information on the repo and release package

[ekzhu]

(1) Replacing an individual outlook.com email address with a mailing list containing all current repo maintainers
(2) Remove text and keep Microsoft open-source statement

[randombet]

This change need more context and supporting evidence to justify itself.
It contains changes that may jeopardize the contributor community.

See my reply.

[gagb]

This change need more context and supporting evidence to justify itself. It contains changes that may jeopardize the contributor community.

@randombet -- a PR for acknowledging contributors in the repo is already on the way. Stay tuned. The PR only removed non-standard wording and created a distribution list for maintainers instead of a private outlook.com address.

Edit: #3384