Jira and Confluence connectors: ensure that deprecated APIs are still used for older Jira/Confluence Server

[artem-shelkovnikov]

Bug Description

See #3710, https://developer.atlassian.com/changelog/#CHANGE-2046 and https://developer.atlassian.com/cloud/jira/platform/changelog/#CHANGE-2046.

It seems like the APIs are deprecated for Cloud products and newer Server products, but if used against older versions the new APIs are not available. We need to make sure that when hitting older Server products we still use the deprecated APIs.

To Reproduce

Steps to reproduce the behavior:

1. Create a Jira/Confluence server deployment of versions smaller than 10
2. Try to sync content from these instances
3. See error

Expected behavior

Sync works for older and newer Server deployments

[support337]

tested and connector does not work vs JIRA Server v9.12.4

also beware that running updated elastic-connectors:9.2.4 vs JIRA version before 10 will effectively ERASE all documents in your index since proper error handling on connector side is kind of non existant

as a workaround use older version of connectors - elastic-connectors:9.1.4 seems to be working vs elastic 9.2.4 and JIRA Server v9.12.4