PHPCS configuration file: replace deprecated `Passing an array of values to a property using a comma-separated string`

[remyperona]

Description

The old syntax for the config file using a string with comma-separated values was deprecated in PHPCS 3.3 and remove in PHPCS 4.0.

Type of change

• [x] Chore

Detailed scenario

What was tested

Using the new syntax, there is no longer a deprecated warning when running PHPCS

How to test

Run PHPCS

Technical description

Documentation

Use element nodes instead of the old syntax to pass the values necessary.

Mandatory Checklist

Code validation

• [x] I validated all the Acceptance Criteria. If possible, provide screenshots or videos.
• [x] I triggered all changed lines of code at least once without new errors/warnings/notices.
• [x] I implemented built-in tests to cover the new/changed code.

Code style

• [x] I wrote a self-explanatory code about what it does.
• [x] I protected entry points against unexpected inputs.
• [x] I did not introduce unnecessary complexity.
• [x] Output messages (errors, notices, logs) are explicit enough for users to understand the issue and are actionnable.

[codacy-production[bot]]

Coverage summary from Codacy

See diff coverage on Codacy

Coverage variation	Diff coverage
:white_check_mark: +0.00% (target: -0.10%)	:white_check_mark: ∅ (target: 50.00%)

Coverage variation details

	Coverable lines	Covered lines	Coverage
Common ancestor commit (3c046b5332ec1175a498d32765862d87be7a0112)	39079	17123	43.82%
Head commit (c42b16a19ef58882804b61b23f8ff4b93e82e344)	39079 (+0)	17123 (+0)	43.82% (+0.00%)

Coverage variation is the difference between the coverage for the head and common ancestor commits of the pull request branch: <coverage of head commit> - <coverage of common ancestor commit>

Diff coverage details

	Coverable lines	Covered lines	Diff coverage
Pull request (#7397)	0	0	∅ (not applicable)

Diff coverage is the percentage of lines that are covered by tests out of the coverable lines that the pull request added or modified: <covered lines added or modified>/<coverable lines added or modified> * 100%

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[Mai-Saad]

For test: Run e2e smoke

[Miraeld]

e2e smoke are green,

PHPCS is green as well,

Works properly.