Update rollup package to fix dependabot findings

[wojtekn]

Related issues

• Fixes https://github.com/Automattic/studio/security/dependabot/128

How AI was used in this PR

I made the change manually.

Proposed Changes

• I propose updating rollup package to fix dependabot findings.

Testing Instructions

• Confirm if builds go through.

Pre-merge Checklist

• Have you checked for TypeScript, React or other console errors?

[wojtekn]

Closing in favor of #2830

[wpmobilebot]

📊 Performance Test Results

Comparing e972fff vs trunk

app-size

Metric	trunk	e972fff	Diff	Change
App Size (Mac)	1236.40 MB	1236.40 MB	+0.00 MB	⚪ 0.0%

site-editor

Metric	trunk	e972fff	Diff	Change
load	1887 ms	1916 ms	+29 ms	⚪ 0.0%

site-startup

Metric	trunk	e972fff	Diff	Change
siteCreation	6127 ms	7086 ms	+959 ms	🔴 15.7%
siteStartup	3939 ms	3935 ms	4 ms	⚪ 0.0%

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Results are median values from multiple test runs.

Legend: 🟢 Improvement (faster) | 🔴 Regression (slower) | ⚪ No change (<50ms diff)