fix: requirements.txt to reduce vulnerabilities

The following vulnerabilities are fixed by pinning transitive dependencies:
- https://snyk.io/vuln/SNYK-PYTHON-STREAMLIT-6156621

requirements.txt

@@ -15,7 +15,7 @@ pyarrow>=14.0.1 # not directly required, pinned by Snyk to avoid a vulnerability
 pypdf==3.17.4
 requests>=2.31.0 # not directly required, pinned by Snyk to avoid a vulnerability
 ruff==0.1.9
-streamlit==1.29.0
+streamlit==1.30.0
 streamlit-feedback==0.1.3
 tiktoken==0.5.2
 tornado>=6.3.3 # not directly required, pinned by Snyk to avoid a vulnerability