chore: Update Public API schema (#4015)

Co-authored-by: shortstacked <7861842+shortstacked@users.noreply.github.com>
Co-authored-by: Jon <jonathan.bennetts@gmail.com>

docs/api/v1/openapi.yml

@@ -1381,6 +1381,10 @@ components:
           writeOnly: true
           example:
             accessToken: ada612vad6fa5df4adf5a5dsf4389adsf76da7s
+        isResolvable:
+          type: boolean
+          example: false
+          description: Whether this credential has resolvable fields
         createdAt:
           type: string
           format: date-time