3 new commits pushed to

<https://github.com/RTimothyEdwards/open_pdks/tree/master|master>

by RTimothyEdwards

<https://github.com/RTimothyEdwards/open_pdks/commit/237959eeddfe01b19f76dd7a500e25b36d36a23f|237959ee>

- Rescinded the change to the sky130 tech file for magic from

<https://github.com/RTimothyEdwards/open_pdks/commit/fc04c9d7b7d24c9ae5829112a51290cced7a766e|fc04c9d7>

- Updated the JSON reference files with the latest commits.

<https://github.com/RTimothyEdwards/open_pdks/commit/3f9bdbd857564726b731760dc2c817e84ca7d8ac|3f9bdbd8>

- Regenerated the EF I/O overlay combination pads using the last most RTimothyEdwards/open_pdks