Release Notes for v39.0.0

Fixes

• Fixed a potential crash in dialog.showOpenDialog on Windows with an empty extension filter array. #48658 (Also in 37, 38)
• Fixed an error when checking environmental variables when using remote checksums when installing Electron via npm. #48673 (Also in 37, 38)

Other Changes

• Updated Chromium to 142.0.7444.52. #48641