[Plugins] Migrate from Micronaut HTTPClient to standard Java HTTP Client in plugins

[fhussonnois]

Issue description

To reduce the use of Micronaut in plugins we should remove where possible the use of the Micronaut HTTP Client.

• plugin-dbt
• plugin-airbyte
• plugin-servicenow
• plugin-elasticsearch
• plugin-powerbi
• plugin-openapi
• plugin-hightouch
• plugin-fivetran
• plugin-notification

[loicmathieu]

We now have support for a custom HttpClient on top of Apache Http CLient.
It would be a good idea to refactor all tasks that uses the Micronaut HTTP Client to this new client.

[aeSouid]

here is the PRs:

• plugin-powerbi: Feat migration http client: plugin-powerbi#32
• plugin-airbyte: Migrate from the micronaut httpclient to the kestra http client plugin-airbyte#99
• plugin-dbt: Migrate to the kestra http client instead of micronaut plugin-dbt#176
• plugin-servicenow: Migrate from micronaut http to kestra http components plugin-servicenow#31
• plugin-hightouch: Feat migrate from the micronaut http to kestra components plugin-hightouch#30
• plugin-fivetran: Feat migrate from the micronaut http to kestra components plugin-fivetran#32
• plugin-notification: Feat migrate from the micronaut http to kestra components plugin-notifications#198