Bump pip from 25.3 to 26.0 in /sdks/python/container/ml/py313 (#37485)

Bumps [pip](https://github.com/pypa/pip) from 25.3 to 26.0.
- [Changelog](https://github.com/pypa/pip/blob/main/NEWS.rst)
- [Commits](pypa/pip@25.3...26.0)

---
updated-dependencies:
- dependency-name: pip
  dependency-version: '26.0'
  dependency-type: direct:production
...

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Author: dependabot[bot]

sdks/python/container/ml/py313/base_image_requirements.txt

@@ -154,7 +154,7 @@ pandas==2.2.3
 parameterized==0.9.0
 pg8000==1.31.5
 pillow==12.1.0
-pip==25.3
+pip==26.0
 pluggy==1.6.0
 propcache==0.4.1
 proto-plus==1.27.0