Replace deprecated Promtail with Grafana Alloy

This issue is in relation to the *Using Promtail, Loki and Grafana to access Tracee Logs* tutorial, located in the documentation at [https://aquasecurity.github.io/tracee/latest/tutorials/promtail/](https://aquasecurity.github.io/tracee/latest/tutorials/promtail/).

The tutorial uses *Promtail* which is now deprecated. (See [https://grafana.com/docs/loki/latest/send-data/promtail/installation/#install-promtail](https://grafana.com/docs/loki/latest/send-data/promtail/installation/#install-promtail).

Also the *grafana/loki-distributed* helm chart used in the tutorial is also deprecated. (See [[grafana/loki-distributed](https://grafana.com/docs/loki/latest/setup/migrate/migrate-from-distributed)](https://grafana.com/docs/loki/latest/setup/migrate/migrate-from-distributed/)).

The Grafana documentation recommends the following migrations:

| Deprecated | New | Source |
| ----------- | ----------- | ----------- |
| Promtail | Grafana Alloy | [Migrate from Promtail to Grafana Alloy](https://grafana.com/docs/alloy/latest/set-up/migrate/from-promtail/) |
| loki-distributed Helm chart | loki Helm Chart, v3.0 or higher| [Migrate from loki-distributed Helm chart](https://grafana.com/docs/loki/latest/setup/migrate/migrate-from-distributed/#migrate-from-loki-distributed-helm-chart) |

I propose updating the [tutorial](https://aquasecurity.github.io/tracee/latest/tutorials/promtail/) as below:

- Migrate from `Promtail` to `Grafana Alloy`
- Migrate from `loki-distributed` Helm chart to `loki` Helm Chart, v3.0 or higher

And also clarifying ways to access to Grafana Dashboard running in remote servers, using e.g. ssh tunneling to local machine.

Start with the Promtail tutorial at https://aquasecurity.github.io/tracee/latest/tutorials/promtail/ and compare its setup with Grafana's migration guidance for Alloy and the loki Helm chart. Done means the tutorial no longer uses Promtail or loki-distributed, uses loki chart v3 or higher, and explains remote Grafana access such as SSH tunneling.

Written by the indexing model from the issue text.