Update contrib SHA (#3585)

Fixes #3584

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: 21b26b39c62b27b116978813d47b9b7d104b54be
+  CONTRIB_REPO_SHA: b6c11054b9f3237eab143d536b072ff3df8dc970
   # 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