Bump webob from 1.8.7 to 1.8.8 (#3438)

Bumps [webob](https://github.com/Pylons/webob) from 1.8.7 to 1.8.8.
- [Changelog](https://github.com/Pylons/webob/blob/main/CHANGES.txt)
- [Commits](Pylons/webob@1.8.7...1.8.8)

---
updated-dependencies:
- dependency-name: webob
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

constraints.txt

@@ -226,7 +226,7 @@ waitress==3.0.0
  # webtest
 webcolors==24.6.0
  # via jsonschema
-webob==1.8.7
+webob==1.8.8
  # via
  # pyramid
  # webtest