fix: build/venv-test-ipywidgets8-requirements.txt to reduce vulnerabilities

The following vulnerabilities are fixed by pinning transitive dependencies:
- https://snyk.io/vuln/SNYK-PYTHON-ANYIO-7361842
- https://snyk.io/vuln/SNYK-PYTHON-IPYTHON-3318382
- https://snyk.io/vuln/SNYK-PYTHON-JUPYTERCORE-10300774
- https://snyk.io/vuln/SNYK-PYTHON-JUPYTERSERVER-5862881
- https://snyk.io/vuln/SNYK-PYTHON-JUPYTERSERVER-5862882
- https://snyk.io/vuln/SNYK-PYTHON-JUPYTERSERVER-6099119
- https://snyk.io/vuln/SNYK-PYTHON-JUPYTERSERVER-7217832
- https://snyk.io/vuln/SNYK-PYTHON-SETUPTOOLS-3180412
- https://snyk.io/vuln/SNYK-PYTHON-SETUPTOOLS-7448482
- https://snyk.io/vuln/SNYK-PYTHON-SETUPTOOLS-9964606
- https://snyk.io/vuln/SNYK-PYTHON-TORNADO-10176059
- https://snyk.io/vuln/SNYK-PYTHON-TORNADO-5537286
- https://snyk.io/vuln/SNYK-PYTHON-TORNADO-5840803
- https://snyk.io/vuln/SNYK-PYTHON-TORNADO-6041512
- https://snyk.io/vuln/SNYK-PYTHON-TORNADO-7217828
- https://snyk.io/vuln/SNYK-PYTHON-TORNADO-7217829
- https://snyk.io/vuln/SNYK-PYTHON-TORNADO-8400708
- https://snyk.io/vuln/SNYK-PYTHON-ZIPP-7430899

Author: snyk-bot

build/venv-test-ipywidgets8-requirements.txt

@@ -13,7 +13,7 @@ ipympl
 pillow>=10.2.0
 setuptools>=78.1.1
 zipp>=3.19.1
-tornado>=6.4.1
+tornado>=6.5
 anyio>=4.4.0
 requests>=2.32.4
 fonttools>=4.43.0