Bump source-map-support from 0.5.19 to 0.5.20
Bump source-map-support from 0.5.19 to 0.5.20

Bumps [source-map-support](https://github.com/evanw/node-source-map-support) from 0.5.19 to 0.5.20.
- [Release notes](https://github.com/evanw/node-source-map-support/releases)
- [Commits](https://github.com/evanw/node-source-map-support/compare/v0.5.19...v0.5.20)

---
updated-dependencies:
- dependency-name: source-map-support
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
de-luca/electron-json-config