Fix error shows by composer validate

[mukeshpanchal27]

Describe the bug

I discovered this bug, and then I worked on the #246 (comment). I also managed to reproduce the same issue in the trunk.

Error:

- The package "wp-coding-standards/wpcs" is pointing to a commit-ref, this is bad practice and can cause unforeseen issues.
- require.automattic/vipwpcs : exact version constraints (2.3.3) should be avoided if the package follows semantic versioning

Steps to Reproduce

1. Clone the repo code in your local system
2. Install composer
3. Run composer validate
4. Check errors

Screenshots, screen recording, code snippet

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Environment information

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WordPress information

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Code of Conduct

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