fix: Fix JSON structure returned by 'daily_logs' endpoint

[nortaljevgenikr]

Fixes for daily_logs endpoint:

1. JSON result: added outer element, namely - array notation (outer-most brackets - [ and ])
2. JSON result: array elements are now separated with commas {...}{...}{...} -> {...},{...},{...}
3. In case when there are no results: instead of an empty archive producing error There was an error while extracting <filename>: empty archive, now the contents are an empty (but valid) JSON ([]).

Refs: OPMONDEV-193

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[raits]

Looks good to me.