Fix missing Data Fusion sensor integration (#17914)

We recently fixed provider.yaml validation and PR #17787
added a new Data Fusion integration without flagging this as error
because it was based on earlier version of the change without
the fix to static checks.

This PR adds the missing integration

airflow/providers/google/provider.yaml

@@ -462,6 +462,9 @@ sensors:
   - integration-name: Google Dataflow
     python-modules:
       - airflow.providers.google.cloud.sensors.dataflow
+  - integration-name: Google Data Fusion
+    python-modules:
+      - airflow.providers.google.cloud.sensors.datafusion
   - integration-name: Google Dataproc
     python-modules:
       - airflow.providers.google.cloud.sensors.dataproc