Bump source-map-support from 0.5.19 to 0.5.20 in /app

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:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

app/package.json

@@ -30,7 +30,7 @@
     "native-process-working-directory": "^1.0.2",
     "npm": "6",
     "rxjs": "^7.2.0",
-    "source-map-support": "^0.5.19",
+    "source-map-support": "^0.5.20",
     "v8-compile-cache": "^2.3.0",
     "yargs": "^17.1.0"
   },