feat: add new abort cause and new route next hop type (#124)

* feat: add new abort cause and new route next hop type

PiperOrigin-RevId: 460402186

Source-Link: googleapis/googleapis@5813dcf

Source-Link: https://github.com/googleapis/googleapis-gen/commit/c0d4294b8d6a55785f0dd2569ca740e17eb62fbe
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google/cloud/network_management_v1/types/trace.py

@@ -549,6 +549,7 @@ class NextHopType(proto.Enum):
         NEXT_HOP_INTERNET_GATEWAY = 8
         NEXT_HOP_BLACKHOLE = 9
         NEXT_HOP_ILB = 10
+        NEXT_HOP_ROUTER_APPLIANCE = 11
 
     route_type = proto.Field(
         proto.ENUM,
@@ -1036,6 +1037,7 @@ class Cause(proto.Enum):
         MISMATCHED_SOURCE_NETWORK = 12
         DESTINATION_ENDPOINT_NOT_FOUND = 13
         MISMATCHED_DESTINATION_NETWORK = 14
+        UNSUPPORTED = 15
 
     cause = proto.Field(
         proto.ENUM,