MLBEDSW-6425: Update to TensorFlow 2.8

Update the flatbuffers generated code to comply with TensorFlow 2.8

Signed-off-by: Rickard Bolin <rickard.bolin@arm.com>
Change-Id: Ia65325b88745e49dbafa803a38c0ea0e7d0478ba
diff --git a/ethosu/vela/operation.py b/ethosu/vela/operation.py
index 845d70b..8e06b1e 100644
--- a/ethosu/vela/operation.py
+++ b/ethosu/vela/operation.py
@@ -314,6 +314,11 @@
     AssignVariable = OperatorInfo()
     BroadcastArgs = OperatorInfo()
     RandomStandardNormal = OperatorInfo()
+    Bucketize = OperatorInfo()
+    RandomUniform = OperatorInfo()
+    Multinomial = OperatorInfo()
+    Gelu = OperatorInfo()
+    DynamicUpdateSlice = OperatorInfo()
 
     @property
     def info(self):