Update beautifulsoup4 requirement from ~=4.12.2 to ~=4.12.3

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

@@ -1,3 +1,3 @@
 requests>=2.24.0
 python-dateutil>=2.8.1
-beautifulsoup4~=4.12.2
+beautifulsoup4~=4.12.3