build(deps): bump beautifulsoup4 from 4.12.2 to 4.12.3

Bumps [beautifulsoup4](https://www.crummy.com/software/BeautifulSoup/bs4/) from 4.12.2 to 4.12.3.

---
updated-dependencies:
- dependency-name: beautifulsoup4
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

requirements.txt

@@ -12,7 +12,7 @@ git+https://github.com/snarfed/mox3.git#egg=mox3
 git+https://github.com/dvska/gdata-python3.git#egg=gdata
 git+https://github.com/Alir3z4/html2text.git#egg=html2text
 
-beautifulsoup4==4.12.2
+beautifulsoup4==4.12.3
 bech32==1.2.0
 brevity==0.2.17
 Brotli==1.1.0