Drop GITHUB_TOKEN from release process

[kousu]

Checklist

GitHub

• I've given this PR a concise, self-descriptive, and meaningful title
• I've linked relevant issues in the PR body
• I've applied the relevant labels to this PR
• I've assigned a reviewer

PR contents

• I've consulted ivadomed's internal developer documentation to ensure my contribution is in line with any relevant design decisions
• I've added relevant tests for my contribution
• I've updated the relevant documentation for my changes, including argparse descriptions, docstrings, and ReadTheDocs tutorial pages

Description

This seems to be automatic now? It's no longer documented on https://github.com/softprops/action-gh-release/blob/fe9a9bd/README.md

Indeed it was removed in softprops/action-gh-release@7e3b173

[coveralls]

Pull Request Test Coverage Report for Build 2061133478

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 79.163%

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Totals
Change from base Build 2055018908:	0.0%
Covered Lines:	4673
Relevant Lines:	5903

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💛 - Coveralls

[dyt811]

Looking good. Thanks for spotting this. I will make sure to double check this in the upcoming release to see if anything is affected. Shouldn't be as the original PR softprops/action-gh-release#83 mentioend but just in case.

[dyt811]

How do you like... find out about this lol? Is there a newsfeed or something I am missing. This sounds so very niche info. Super curious how you found out.