Update contrib SHA (#3348)

Fixes #3347

Author: ocelotl

.github/workflows/test.yml

@@ -10,7 +10,7 @@ env:
   # Otherwise, set variable to the commit of your branch on
   # opentelemetry-python-contrib which is compatible with these Core repo
   # changes.
-  CONTRIB_REPO_SHA: 2edd017c22edb4896e182c934bc199d716495ce6
+  CONTRIB_REPO_SHA: a5ed4da478c4360fd6e24893f7574b150431b7ee
   # This is needed because we do not clone the core repo in contrib builds anymore.
   # When running contrib builds as part of core builds, we use actions/checkout@v2 which
   # does not set an environment variable (simply just runs tox), which is different when