Bump rxjs from 7.5.7 to 7.8.1 in /app

Bumps [rxjs](https://github.com/reactivex/rxjs) from 7.5.7 to 7.8.1.
- [Release notes](https://github.com/reactivex/rxjs/releases)
- [Changelog](https://github.com/ReactiveX/rxjs/blob/7.8.1/CHANGELOG.md)
- [Commits](https://github.com/reactivex/rxjs/compare/7.5.7...7.8.1)

---
updated-dependencies:
- dependency-name: rxjs
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

app/package.json

@@ -29,7 +29,7 @@
     "mz": "^2.7.0",
     "native-process-working-directory": "^1.0.2",
     "npm": "6",
-    "rxjs": "^7.5.7",
+    "rxjs": "^7.8.1",
     "source-map-support": "^0.5.20",
     "v8-compile-cache": "^2.3.0",
     "yargs": "^17.3.1"

app/yarn.lock

@@ -3231,10 +3231,10 @@ run-queue@^1.0.0, run-queue@^1.0.3:
   dependencies:
     aproba "^1.1.1"
 
-rxjs@^7.5.2, rxjs@^7.5.7:
-  version "7.5.7"
-  resolved "https://registry.yarnpkg.com/rxjs/-/rxjs-7.5.7.tgz#2ec0d57fdc89ece220d2e702730ae8f1e49def39"
-  integrity sha512-z9MzKh/UcOqB3i20H6rtrlaE/CgjLOvheWK/9ILrbhROGTweAi1BaFsTT9FbwZi5Trr1qNRs+MXkhmR06awzQA==
+rxjs@^7.5.2, rxjs@^7.8.1:
+  version "7.8.1"
+  resolved "https://registry.yarnpkg.com/rxjs/-/rxjs-7.8.1.tgz#6f6f3d99ea8044291efd92e7c7fcf562c4057543"
+  integrity sha512-AA3TVj+0A2iuIoQkWEK/tqFjBq2j+6PO6Y0zJcvzLAFhEFIO3HL0vls9hWLncZbAAbK0mar7oZ4V079I/qPMxg==
   dependencies:
     tslib "^2.1.0"
 
@@ -3728,12 +3728,7 @@ tough-cookie@~2.5.0:
     psl "^1.1.28"
     punycode "^2.1.1"
 
-tslib@^2.1.0:
-  version "2.3.1"
-  resolved "https://registry.yarnpkg.com/tslib/-/tslib-2.3.1.tgz#e8a335add5ceae51aa261d32a490158ef042ef01"
-  integrity sha512-77EbyPPpMz+FRFRuAFlWMtmgUWGe9UOG2Z25NqCwiIjRhOf5iKGuzSe5P2w1laq+FkRy4p+PCuVkJSGkzTEKVw==
-
-tslib@^2.3.0:
+tslib@^2.1.0, tslib@^2.3.0:
   version "2.5.0"
   resolved "https://registry.yarnpkg.com/tslib/-/tslib-2.5.0.tgz#42bfed86f5787aeb41d031866c8f402429e0fddf"
   integrity sha512-336iVw3rtn2BUK7ORdIAHTyxHGRIHVReokCR3XjbckJMK7ms8FysBfhLR8IXnAgy7T0PTPNBWKiH514FOW/WSg==