chore: fix publish ci on fork

[pissang]

Brief Information

This pull request is in the type of:

• bug fixing
• new feature
• others

What does this PR do?

Avoid running nightly version publish workflow on the forks. See ecomfe/zrender#928

Merging options

• Please squash the commits into a single one when merging.

[echarts-bot]

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[plainheart]

The stale and source-release may be also unnecessary.

[echarts-bot]

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[pissang]

@plainheart Thanks for the reminding. Just added

[echarts-bot]

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[echarts-bot]

Congratulations! Your PR has been merged. Thanks for your contribution! 👍