fix(release-plz): update workflow to run release-plz

[ptondereau]

Description

Previous release-plz jobs are failing: https://github.com/extphprs/ext-php-rs/actions/runs/18954177887/job/54175907346

Run rust-lang/crates-io-auth-action@v1
  with:
    url: https://crates.io/
  env:
    CARGO_HOME: /home/runner/.cargo
    CARGO_INCREMENTAL: 0
    CARGO_TERM_COLOR: always
Retrieving GitHub Actions JWT token with audience: crates.io
Retrieved JWT token successfully
Requesting token from: https://crates.io/api/v1/trusted_publishing/tokens. User agent: crates-io-auth-action/1.0.1
Error: Failed to retrieve token from Cargo registry. Status: 400. Error: Trusted Publishing does not support the `workflow_run` event trigger due to security concerns. Please use a different trigger such as `push`, `release`, or `workflow_dispatch`.

[coveralls]

Pull Request Test Coverage Report for Build 18970529441

Details

• 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 31.098%

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Totals
Change from base Build 18953724839:	0.0%
Covered Lines:	1359
Relevant Lines:	4370

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💛 - Coveralls