bump webob to 1.8.8 in test requirements (#2804)

Author: emdneto

instrumentation/opentelemetry-instrumentation-pyramid/test-requirements.txt

@@ -15,7 +15,7 @@ tomli==2.0.1
 translationstring==1.4
 typing_extensions==4.9.0
 venusian==3.1.0
-WebOb==1.8.7
+WebOb==1.8.8
 Werkzeug==3.0.3
 wrapt==1.16.0
 zipp==3.19.2