Revert "deps: Bump OpenTelemetryCollector to v1beta1 (kubewarden#479)"

This reverts commit 05a6207.

This revert ought to fix the jaeger helm chart install error:
```
jaeger.jaegertracing.io/my-open-telemetry created
   Error: UPGRADE FAILED: failed to create resource: admission webhook "mopentelemetrycollectorbeta.kb.io" denied the request: json: cannot unmarshal string into Go struct field OpenTelemetryCollectorSpec.spec.config of type v1beta1.Config
```

There seems to be incompatibilities between latest jaeger-operator-2.54.0
(from 2024-06) and latest opentelemetry-operator-0.64.4.

The latest opentelemetry-operator chart includes the operator image
0.103.0 but has not yet consumed 0.104.0, which performs the migrationg
to OpentelemetryCollector apiVersion `opentelemetry.io/v1beta1`.

charts/kubewarden-controller/templates/opentelemetry-collector.yaml

@@ -1,5 +1,5 @@
 {{ if or .Values.telemetry.metrics.enabled .Values.telemetry.tracing.enabled }}
-apiVersion: opentelemetry.io/v1beta1
+apiVersion: opentelemetry.io/v1alpha1
 kind: OpenTelemetryCollector
 metadata:
   name: kubewarden