Bump webob from 1.8.7 to 1.8.8 (#721)

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>

requirements.txt

@@ -594,9 +594,9 @@ waitress==2.1.2 \
     --hash=sha256:7500c9625927c8ec60f54377d590f67b30c8e70ef4b8894214ac6e4cad233d2a \
     --hash=sha256:780a4082c5fbc0fde6a2fcfe5e26e6efc1e8f425730863c04085769781f51eba
     # via kinto
-webob==1.8.7 \
-    --hash=sha256:73aae30359291c14fa3b956f8b5ca31960e420c28c1bec002547fb04928cf89b \
-    --hash=sha256:b64ef5141be559cfade448f044fa45c2260351edcb6a8ef6b7e00c7dcef0c323
+webob==1.8.8 \
+    --hash=sha256:2abc1555e118fc251e705fc6dc66c7f5353bb9fbfab6d20e22f1c02b4b71bcee \
+    --hash=sha256:b60ba63f05c0cf61e086a10c3781a41fcfe30027753a8ae6d819c77592ce83ea
     # via pyramid
 zope-deprecation==5.0 \
     --hash=sha256:28c2ee983812efb4676d33c7a8c6ade0df191c1c6d652bbbfe6e2eeee067b2d4 \