Fix phplint workflow if-condition syntax

[aaronware]

Summary

• Fix malformed if conditions on the "PHP Lint 8.0+" and "PHP Lint 7.4" steps in phplint.yml
• The old expressions mixed literal text with ${{ }} tokens (e.g. ( ${{ inputs.php_version }} == 8.0 ...)), which GitHub Actions evaluates as always truthy and emits a syntax warning
• Replaced with proper expressions where the entire condition is evaluated as a workflow expression

What was wrong

# Before (broken) — literal text outside ${{ }} tokens
if: ( ${{ inputs.php_version }} == 8.0 || ${{ inputs.php_version }} == 8.2 ) && ${{ steps.check_commit_message.outputs.skip_lint }} != 'true'"

# After (fixed) — clean expression, version values quoted as strings
if: (inputs.php_version == '8.0' || inputs.php_version == '8.2') && steps.check_commit_message.outputs.skip_lint != 'true'

This was surfacing as a workflow syntax warning in downstream repos (e.g. resourcingedge) that call this reusable workflow.

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