Move schema to Bearer auth

Author: rjtokenring

openapi/components/footer.yaml

@@ -1,10 +1,7 @@
 components:
   securitySchemes:
     oauth2:
-      type: oauth2
-      flows:
-        clientCredentials:
-          tokenUrl: https://api2.arduino.cc/iot/v1/clients/token
-          scopes:
-            iot:devices: Read and write my devices
-            iot:things: Read and write my things
+      description: Bearer authentication
+      type: http
+      scheme: bearer
+      bearerFormat: JWT