Update dependency edx-opaque-keys to v2.5.1

Author: renovate[bot]

build-support/requirements/requirements.txt

@@ -8,7 +8,7 @@ django-webpack-loader>=0.7.0
 django>=3.0
 djangorestframework>=3.0.0
 djoser==2.2.2
-edx-opaque-keys==2.2.2
+edx-opaque-keys==2.5.1
 google-api-python-client==1.7.11
 google-auth==1.6.3
 google-auth-oauthlib>=0.5.2