Add zizmor to existing precommit GHA workflow

[derrickaw]

1. https://github.com/apache/beam/actions/runs/28186394984/job/83489302191
2. [Task]: Remove Zizmor workflow vulnerability findings #39105

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[derrickaw]

/gemini review

[gemini-code-assist]

Note

Gemini is unable to generate a review for this pull request due to the file types involved not being currently supported.

[gemini-code-assist]

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[github-actions]

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R: @liferoad for label build.

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[derrickaw]

assign to next reviewer

[Abacn]

PreCommit GHA currently failing due to The action zizmorcore/zizmor-action@6599ee8 is not allowed in apache/beam

[derrickaw]

Thats sad.