Fix CI scripts for KiCad 6 compatibility

[jaylamb]

During development of #44, a few small issues have been uncovered with the CI scripts:

• [x] https://github.com/apcountryman/prototype-kicad-project-ci-cd/blob/0a7bf453a597e092193eecf6f4821b3eb687dfdd/ci/check-design-rules-compliance#L70 .drt should be .rpt
• [x] https://github.com/apcountryman/prototype-kicad-project-ci-cd/blob/0a7bf453a597e092193eecf6f4821b3eb687dfdd/ci/check-electrical-rules-compliance#L63 .sch should be .kicad_sch
• [x] https://github.com/apcountryman/prototype-kicad-project-ci-cd/blob/0a7bf453a597e092193eecf6f4821b3eb687dfdd/ci/generate-interactive-bom#L62 .pro should be .kicad_pro
• [x] https://github.com/apcountryman/prototype-kicad-project-ci-cd/blob/0a7bf453a597e092193eecf6f4821b3eb687dfdd/ci/generate-interactive-bom#L70 .pro should be .kicad_pro
• [x] https://github.com/apcountryman/prototype-kicad-project-ci-cd/blob/0a7bf453a597e092193eecf6f4821b3eb687dfdd/ci/generate-interactive-bom#L73 if ! git ... should be if git ...
• [x] https://github.com/apcountryman/prototype-kicad-project-ci-cd/blob/0a7bf453a597e092193eecf6f4821b3eb687dfdd/ci/generate-pcb-renders#L61 .pro should be .kicad_pro
• [x] https://github.com/apcountryman/prototype-kicad-project-ci-cd/blob/0a7bf453a597e092193eecf6f4821b3eb687dfdd/ci/generate-pcb-renders#L69 .pro should be .kicad_pro
• [x] https://github.com/apcountryman/prototype-kicad-project-ci-cd/blob/0a7bf453a597e092193eecf6f4821b3eb687dfdd/ci/generate-pcb-renders#L72 if ! git ... should be if git ...
• [x] https://github.com/apcountryman/prototype-kicad-project-ci-cd/blob/0a7bf453a597e092193eecf6f4821b3eb687dfdd/ci/generate-production-files#L62 .pro should be .kicad_pro
• [x] https://github.com/apcountryman/prototype-kicad-project-ci-cd/blob/0a7bf453a597e092193eecf6f4821b3eb687dfdd/ci/generate-production-files#L70 .pro should be .kicad_pro
• [x] https://github.com/apcountryman/prototype-kicad-project-ci-cd/blob/0a7bf453a597e092193eecf6f4821b3eb687dfdd/ci/generate-production-files#L73 if ! git ... should be if git ...
• [x] https://github.com/apcountryman/prototype-kicad-project-ci-cd/blob/0a7bf453a597e092193eecf6f4821b3eb687dfdd/ci/generate-schematic-pdf#L62 .pro should be .kicad_pro
• [x] https://github.com/apcountryman/prototype-kicad-project-ci-cd/blob/0a7bf453a597e092193eecf6f4821b3eb687dfdd/ci/generate-schematic-pdf#L70 .pro should be .kicad_pro
• [x] https://github.com/apcountryman/prototype-kicad-project-ci-cd/blob/0a7bf453a597e092193eecf6f4821b3eb687dfdd/ci/generate-schematic-pdf#L71 .sch should be .kicad_sch
• [x] https://github.com/apcountryman/prototype-kicad-project-ci-cd/blob/0a7bf453a597e092193eecf6f4821b3eb687dfdd/ci/generate-schematic-pdf#L73 if ! git ... should be if git ...
• [x] https://github.com/apcountryman/prototype-kicad-project-ci-cd/blob/0a7bf453a597e092193eecf6f4821b3eb687dfdd/ci/generate-traditional-bom#L62 .pro should be .kicad_pro
• [x] https://github.com/apcountryman/prototype-kicad-project-ci-cd/blob/0a7bf453a597e092193eecf6f4821b3eb687dfdd/ci/generate-traditional-bom#L70 .pro should be .kicad_pro
• [x] https://github.com/apcountryman/prototype-kicad-project-ci-cd/blob/0a7bf453a597e092193eecf6f4821b3eb687dfdd/ci/generate-traditional-bom#L71 .sch should be .kicad_sch
• [x] https://github.com/apcountryman/prototype-kicad-project-ci-cd/blob/0a7bf453a597e092193eecf6f4821b3eb687dfdd/ci/generate-traditional-bom#L73 if ! git ... should be if git ...

[apcountryman]

I'll fix these shortly. Looks like ci/check-electrical-rules-compliance also needs a .sch -> .kicad_sch extension change so it will be added to the list of things to fix.

[jaylamb]

I'll fix these shortly. Looks like ci/check-electrical-rules-compliance also needs a .sch -> .kicad_sch extension change so it will be added to the list of things to fix.

Sounds good. I'll merge things in and be back at it a little later on.