Instantiate SR only once per sensor - Kafka Trigger Sensor

[Thomasr-02]

Describe the bug

When a sensor is frequently triggered, it results in over X requests per second (rq/s) to the Schema Registry. This level of traffic is unnecessary and causes performance issues in a shared Schema Registry, leading to degraded functionality. While the library used for schema management is capable of caching, the cache is not utilized effectively due to individual triggers for each event.

To Reproduce
Steps to reproduce the behavior:

1. Create a kafka sensor
2. Trigger the kafka sensor
3. Monitoring schema registry requests

Expected behavior
The sensor should instantiate and retrieve the schema from the registry only once per sensor activation. This approach reduces the total number of requests made to the Schema Registry, improving overall performance and efficiency.

Details
The instante SR in kafka.go already doing 1 call and 1 call for get schema, after them seeing it on the riferrei/srclient lib used, cache already implemented by default. The problem here is about many insantiate of trigger called by sensorCtx.triggerActions

Screenshots

Requests per second to SR

Environment (please complete the following information):

• Kubernetes: 1.27.13
• Argo Events: 1.7.5

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Message from the maintainers:

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[Thomasr-02]

cache implementation on library used