Bump pg8000 from 1.31.4 to 1.31.5 in /sdks/python/container/ml/py312

Bumps [pg8000](https://github.com/tlocke/pg8000) from 1.31.4 to 1.31.5.
- [Commits](https://github.com/tlocke/pg8000/commits)

---
updated-dependencies:
- dependency-name: pg8000
  dependency-version: 1.31.5
  dependency-type: direct:production
...

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

Author: dependabot[bot]

sdks/python/container/ml/py312/base_image_requirements.txt

@@ -159,7 +159,7 @@ overrides==7.7.0
 packaging==25.0
 pandas==2.2.3
 parameterized==0.9.0
-pg8000==1.31.4
+pg8000==1.31.5
 pip==25.2
 pluggy==1.6.0
 propcache==0.3.2