fix: pip-sample/requirements.txt to reduce vulnerabilities

The following vulnerabilities are fixed by pinning transitive dependencies:
- https://snyk.io/vuln/SNYK-PYTHON-JUPYTERCORE-3063766
- https://snyk.io/vuln/SNYK-PYTHON-NUMPY-2321964
- https://snyk.io/vuln/SNYK-PYTHON-NUMPY-2321966
- https://snyk.io/vuln/SNYK-PYTHON-NUMPY-2321970

pip-sample/requirements.txt

@@ -21,15 +21,15 @@ Jinja2==2.10
 jsonschema==2.6.0
 jupyter==1.0.0
 jupyter-client==5.2.3
-jupyter-core==4.4.0
+jupyter-core==4.11.2
 kiwisolver==1.0.1
 matplotlib==2.2.2
 mistune==0.8.3
 nbconvert==5.4.0
 nbformat==4.4.0
 nltk==3.3
 notebook==5.7.0
-numpy==1.21.5
+numpy==1.22.2
 oauthlib==2.1.0
 pandas==0.23.3
 pandocfilters==1.4.2