Bump pip from 25.2 to 26.0

Bumps [pip](https://github.com/pypa/pip) from 25.2 to 26.0.
- [Changelog](https://github.com/pypa/pip/blob/main/NEWS.rst)
- [Commits](pypa/pip@25.2...26.0)

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

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

Author: dependabot[bot]

setup.py

@@ -105,7 +105,7 @@ def _write_version_file():
         "netcdf-fortran==4.6.1",
         "numpy==2.1.3",
         "pandas==2.2.3",
-        "pip==25.3",
+        "pip==26.0",
         "pylint==3.3.4",
         "pyproj==3.7.1",
         "python==3.13",