v0.280.0

Changes in this release

• Update zones.json (#4290)
• Add Åland solar capacity (#4293)
• HU->SI (new exchange) (#4272)
• Make target_datetime typing safer for EIA (#4306)
• Update sv.json (#4308)
• Merged ES_CN and ES_IB parsers (#4303)
• Migrate Python tests to GitHub actions (#4315)
• remove cypress record key
• Update assets/text (#4330)
• Update cypress.yml
• revert electricity maps (#4341)
• Update co2eq files to pass test

Credits

Huge thanks to @gopikrishna1793, @VIKTORVAV99, @pierresegonne, @magol, @Kongkille