Bump pip from 23.0 to 23.2.1

Bumps [pip](https://github.com/pypa/pip) from 23.0 to 23.2.1.
- [Changelog](https://github.com/pypa/pip/blob/main/NEWS.rst)
- [Commits](pypa/pip@23.0...23.2.1)

---
updated-dependencies:
- dependency-name: pip
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

requirements-pip.txt

@@ -6,7 +6,7 @@
 #
 
 # The following packages are considered to be unsafe in a requirements file:
-pip==23.0 \
-    --hash=sha256:aee438284e82c8def684b0bcc50b1f6ed5e941af97fa940e83e2e8ef1a59da9b \
-    --hash=sha256:b5f88adff801f5ef052bcdef3daa31b55eb67b0fccd6d0106c206fa248e0463c
+pip==23.2.1 \
+    --hash=sha256:7ccf472345f20d35bdc9d1841ff5f313260c2c33fe417f48c30ac46cccabf5be \
+    --hash=sha256:fb0bd5435b3200c602b5bf61d2d43c2f13c02e29c1707567ae7fbc514eb9faf2
     # via -r requirements-pip.in