Update fetchContributors.yml

[hexsecs]

Changed to on demand. The action isn't working properly.

Summary of Changes

Describe the changes or improvements made in this pull request.

Related Issue

Closes #

Checklist

• I have read and followed the project's contribution guidelines, including code style and commit message conventions.
• My code is well-documented, and I've updated relevant documentation.
• I have added or updated test cases to ensure the code's functionality.
• I have tested these changes on my local environment.
• All tests pass, and there are no new linting errors.
• I have reviewed and proofread my code and the changes.
• The branch is up-to-date with the base branch.

Screenshots (if applicable)

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Additional Context

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Reviewer(s)

@mention any specific reviewers or tag relevant team members.

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Build	Status	Details	Updated (UTC)
default (Inspect)	🧿 Changes detected (Review)	2 changed	Apr 9, 2024, 2:06 PM

[Abhijay007]

Ya it's better to change it for now, will look into this and try to fix