fix: scripts/benchmark/requirements.txt to reduce vulnerabilities (#460)

The following vulnerabilities are fixed by pinning transitive dependencies:
- https://snyk.io/vuln/SNYK-PYTHON-PILLOW-6182918

Co-authored-by: snyk-bot <snyk-bot@snyk.io>

scripts/benchmark/requirements.txt

@@ -7,3 +7,4 @@ d20
 numpy>=1.22.2 # not directly required, pinned by Snyk to avoid a vulnerability
 setuptools>=65.5.1 # not directly required, pinned by Snyk to avoid a vulnerability
 fonttools>=4.43.0 # not directly required, pinned by Snyk to avoid a vulnerability
+pillow>=10.2.0 # not directly required, pinned by Snyk to avoid a vulnerability