fix: enable persist-credentials in benchmark PR check workflow

[deleonio]

Refs: #7656

The A11y and PO reviews will only take place after all other DoD steps have been completed by the Developer:

• Meaningful pull request title for the release notes
• Pull request is linked to an issue and all changes relate to the issue
• Tests to protect this code implemented (if applicable)
• Manual test performed successfully (if applicable)
• Documentation or migration has been updated (if applicable)

[github-actions]

Netlify Draft Deployment
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[github-actions]

Hydration Benchmark Report (vs Baseline)

📊 Top 5 Änderungen

Component	Current	Baseline	Δ%	Result

📋 Alle Ergebnisse anzeigen

Component	Current	Baseline	Δ%	Result
kol-abbr	8ms	–	–	🆕
kol-accordion	71ms	–	–	🆕
kol-alert	27ms	–	–	🆕
kol-avatar	11ms	–	–	🆕
kol-badge	30ms	–	–	🆕
kol-breadcrumb	17ms	–	–	🆕
kol-button	54ms	–	–	🆕
kol-button-link	52ms	–	–	🆕
kol-card	15ms	–	–	🆕
kol-details	75ms	–	–	🆕
kol-drawer	11ms	–	–	🆕
kol-form	16ms	–	–	🆕
kol-heading	15ms	–	–	🆕
kol-icon	10ms	–	–	🆕
kol-image	5ms	–	–	🆕
kol-input-checkbox	38ms	–	–	🆕
kol-input-color	33ms	–	–	🆕
kol-input-date	41ms	–	–	🆕
kol-input-email	48ms	–	–	🆕
kol-input-file	66ms	–	–	🆕
kol-input-number	49ms	–	–	🆕
kol-input-password	43ms	–	–	🆕
kol-input-radio	34ms	–	–	🆕
kol-input-text	44ms	–	–	🆕
kol-link	55ms	–	–	🆕
kol-link-button	51ms	–	–	🆕
kol-modal	7ms	–	–	🆕
kol-nav	12ms	–	–	🆕
kol-pagination	74ms	–	–	🆕
kol-popover-button	55ms	–	–	🆕
kol-progress	10ms	–	–	🆕
kol-quote	9ms	–	–	🆕
kol-select	32ms	–	–	🆕
kol-skip-nav	9ms	–	–	🆕
kol-spin	10ms	–	–	🆕
kol-split-button	65ms	–	–	🆕
kol-table-stateful	84ms	–	–	🆕
kol-table-stateless	85ms	–	–	🆕
kol-tabs	10ms	–	–	🆕
kol-textarea	35ms	–	–	🆕
kol-toolbar	6ms	–	–	🆕
kol-tree	10ms	–	–	🆕
kol-tree-item	52ms	–	–	🆕
kol-version	52ms	–	–	🆕