Update beautifulsoup4 requirement from ~=4.12.3 to ~=4.13.1

Updates the requirements on [beautifulsoup4](https://www.crummy.com/software/BeautifulSoup/bs4/) to permit the latest version.

---
updated-dependencies:
- dependency-name: beautifulsoup4
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

requirements.txt

@@ -1,5 +1,5 @@
 requests~=2.32.3
-beautifulsoup4~=4.12.3
+beautifulsoup4~=4.13.1
 neo4j~=5.26.0
 langchain>=0.3.0
 langchain-community>=0.3.0