deps: bump pip from 26.0 to 26.1

Bumps [pip](https://github.com/pypa/pip) from 26.0 to 26.1.
- [Changelog](https://github.com/pypa/pip/blob/main/NEWS.rst)
- [Commits](pypa/pip@26.0...26.1)

---
updated-dependencies:
- dependency-name: pip
  dependency-version: '26.1'
  dependency-type: indirect
...

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

Author: dependabot[bot]

requirements-dev.txt

@@ -235,9 +235,9 @@ wheel==0.46.2 \
     # via pip-tools
 
 # The following packages are considered to be unsafe in a requirements file:
-pip==26.0 \
-    --hash=sha256:3ce220a0a17915972fbf1ab451baae1521c4539e778b28127efa79b974aff0fa \
-    --hash=sha256:98436feffb9e31bc9339cf369fd55d3331b1580b6a6f1173bacacddcf9c34754
+pip==26.1 \
+    --hash=sha256:4e8486d821d814b77319acb7b9e8bf5a4ee7590a643e7cb21029f209be8573c1 \
+    --hash=sha256:81e13ebcca3ffa8cc85e4deff5c27e1ee26dea0aa7fc2f294a073ac208806ff3
     # via pip-tools
 setuptools==80.9.0 \
     --hash=sha256:062d34222ad13e0cc312a4c02d73f059e86a4acbfbdea8f8f76b28c99f306922 \