Release notes

Bump powsybl-core 4.3.1 (#335)
Load flow:
- Change plausible max active power default value to 5000 (#332)
- Support of static var compensator with VoltagePerReactivePowerControl extension (slope) (#304)
- Support of slack distribution on loads with negative P0 (#302)
Sensitivity analysis:
- Generator contingency for DC sensitivities (#318)
- Support of BusVoltagePerTargetV related to a transformer for AC sensitivities (#299)
Security analysis:
- First support of DC security analysis (#313)
- Monitor security analysis (#315)

Bug fixes

Fix LfNetwork bus numbering bug (#317)
Security analysis:
- Low voltage violations contained the value of the high voltage limit (#328)
- Fixes in branch results of security analysis (#329)
Sensitivity analysis:
- Fix coupler detection bug (#334)
- Fix function reference for BranchFlowPerPSTAngle factor (#324)
- Fix unsupported balance type (#331)