Bump the all-dependencies group in /backend with 2 updates (#39)

Bumps the all-dependencies group in /backend with 2 updates: [@types/express-serve-static-core](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/express-serve-static-core) and [electron-to-chromium](https://github.com/kilian/electron-to-chromium).


Updates `@types/express-serve-static-core` from 4.19.2 to 4.19.3
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/express-serve-static-core)

Updates `electron-to-chromium` from 1.4.786 to 1.4.787
- [Changelog](https://github.com/Kilian/electron-to-chromium/blob/master/CHANGELOG.md)
- [Commits](https://github.com/kilian/electron-to-chromium/commits)

---
updated-dependencies:
- dependency-name: "@types/express-serve-static-core"
  dependency-type: indirect
  update-type: version-update:semver-patch
  dependency-group: all-dependencies
- dependency-name: electron-to-chromium
  dependency-type: indirect
  update-type: version-update:semver-patch
  dependency-group: all-dependencies
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

backend/yarn.lock

@@ -959,14 +959,14 @@ __metadata:
   linkType: hard
 
 "@types/express-serve-static-core@npm:^4.17.33":
-  version: 4.19.2
-  resolution: "@types/express-serve-static-core@npm:4.19.2"
+  version: 4.19.3
+  resolution: "@types/express-serve-static-core@npm:4.19.3"
   dependencies:
     "@types/node": "npm:*"
     "@types/qs": "npm:*"
     "@types/range-parser": "npm:*"
     "@types/send": "npm:*"
-  checksum: 10c0/471060bbab7be4bbf2c24f5628e1fa2edbfd29fb47a99ba77984e9c0ac33b105a660cfc384ddd1e6fb6f45d9515e70422eefc9a7ba317565919ebcd5db251107
+  checksum: 10c0/5d2a1fb96a17a8e0e8c59325dfeb6d454bbc5c9b9b6796eec0397ddf9dbd262892040d5da3d72b5d7148f34bb3fcd438faf1b37fcba8c5a03e75fae491ad1edf
   languageName: node
   linkType: hard
 
@@ -2039,9 +2039,9 @@ __metadata:
   linkType: hard
 
 "electron-to-chromium@npm:^1.4.668":
-  version: 1.4.786
-  resolution: "electron-to-chromium@npm:1.4.786"
-  checksum: 10c0/ba07145a675d4fefda595cc263d4410d7ab49a35c269daa4bebb43993170f4a77942a0b1d80c5de41ac72aa2f595f15ddc129917e0a0ea6a817bed0ddbfd52dd
+  version: 1.4.787
+  resolution: "electron-to-chromium@npm:1.4.787"
+  checksum: 10c0/fa509ca710186461dd53e31773a7b06af3a958ab9b06b2e3d1d64de35204df2ff6f2050c94186adf4b850583666a50d30a6912103a0e3f5bcfc97864712ff424
   languageName: node
   linkType: hard