Add compatibility workflows and integration tests (#1991)

Fixes #1986
Fixes #1994

- Updated .gitignore to include SSL certificate files.
- Introduced new GitHub Actions workflows for testing compatibility with
Zabbix versions 5.0, 6.0, 7.0, and 7.2.
- Added integration tests for Zabbix API for each version, ensuring
proper authentication and API version handling.
- Updated Docker Compose files to support SSL configuration for Zabbix
web services.
- Removed deprecated default Docker Compose and bootstrap files.
- Removed devenv for version 6.2.

pkg/datasource/datasource.go

@@ -58,7 +58,7 @@ func newZabbixDatasourceInstance(ctx context.Context, dsSettings backend.DataSou
 		return nil, err
 	}
 
-	zabbixAPI, err := zabbixapi.New(dsSettings.URL, client)
+	zabbixAPI, err := zabbixapi.New(dsSettings, client)
 	if err != nil {
 		logger.Error("Error initializing Zabbix API", "error", err)
 		return nil, err