[Snyk] Fix for 4 vulnerabilities (#555)

fix: versioned_docs/version-0.16/model-serving/predictive-inference/frameworks/custom-predictor/grpc/requirements.txt to reduce vulnerabilities


The following vulnerabilities are fixed by pinning transitive dependencies:
- https://snyk.io/vuln/SNYK-PYTHON-NUMPY-2321964
- https://snyk.io/vuln/SNYK-PYTHON-NUMPY-2321966
- https://snyk.io/vuln/SNYK-PYTHON-NUMPY-2321970
- https://snyk.io/vuln/SNYK-PYTHON-ZIPP-7430899

Co-authored-by: snyk-bot <[email protected]>

Author: Jooho

versioned_docs/version-0.16/model-serving/predictive-inference/frameworks/custom-predictor/grpc/requirements.txt

@@ -1,3 +1,5 @@
 kserve
 torchvision==0.18.0
 pillow >=10.3.0,<11.0.0
+numpy>=1.22.2 # not directly required, pinned by Snyk to avoid a vulnerability
+zipp>=3.19.1 # not directly required, pinned by Snyk to avoid a vulnerability