Add Missing PyCon Lithuania conferences

[ELC]

The following conferences are missing:

2019 - https://www.youtube.com/playlist?list=PL5gYhWvxDgAEAzbkB62zNT37myG79XOU_
2021 - https://www.youtube.com/playlist?list=PL5gYhWvxDgAFcRQ91Kd-IFnpxdoAy9FZF
2022 - https://www.youtube.com/playlist?list=PL5gYhWvxDgAEuGqKKZCMXWQjVbB1-za3U
2023 - https://www.youtube.com/playlist?list=PL5gYhWvxDgAFRDiVBNPDBCWYorpu9MY5D
2024 - https://pycon.lt/2024 - https://www.youtube.com/playlist?list=PL5gYhWvxDgAHzMNDaycQxr3UZCBYduMY0
2025 - https://pycon.lt/2025 - https://www.youtube.com/playlist?list=PL5gYhWvxDgAFKLDe225ieBBSU7VdIAPOD