Deck convert from 3.4 to 3.10 doesnt change `redis.sentinel` to object of `host` and `port`

In Deck v 1.55.1, when running `deck file convert --input-file 3.4redis.yaml --from 3.4 --to 3.10` against 3.4 Kong Enterprise config
that has below section for redis configuration
```
sentinel_addresses:
- 10.0.0.1:3636
- 10.0.0.1:3636
- 10.0.0.1:3636
```
It literally converts the `sentinel_addresses` without changing the value to object of `host` and `port` which required format to be accepted by Kong 3.10.x
exp:
```
sentinel_nodes:
- host: 10.0.0.1
port: 3636
- host: 10.0.0.1
port: 3636
- host: 10.0.0.1
port: 3636
```
Requesting to add capabilities to convert the `sentinel_nodes` value when converting the file.

Start with the `deck file convert --from 3.4 --to 3.10` command and trace the conversion handling for Redis sentinel configuration. Add a regression test using the shown `sentinel_addresses` input; done means conversion produces `sentinel_nodes` entries with separate `host` and `port` values accepted by Kong 3.10.x.

Written by the indexing model from the issue text.