Bump electron from 13.6.9 to 15.5.5

Bumps [electron](https://github.com/electron/electron) from 13.6.9 to 15.5.5.
- [Release notes](https://github.com/electron/electron/releases)
- [Changelog](https://github.com/electron/electron/blob/main/docs/breaking-changes.md)
- [Commits](electron/electron@v13.6.9...v15.5.5)

---
updated-dependencies:
- dependency-name: electron
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

package-lock.json

@@ -77,7 +77,7 @@
     "@types/node": "^14.18.12",
     "angular-gauge": "^3.1.3",
     "codelyzer": "^5.1.2",
-    "electron": "^13.6.9",
+    "electron": "^15.5.5",
     "electron-builder": "^20.44.4",
     "electron-reload": "^1.5.0",
     "hammerjs": "^2.0.8",