Bump jest from 26.4.2 to 26.5.3 (#1289)

Bumps [jest](https://github.com/facebook/jest) from 26.4.2 to 26.5.3.
- [Release notes](https://github.com/facebook/jest/releases)
- [Changelog](https://github.com/facebook/jest/blob/master/CHANGELOG.md)
- [Commits](jestjs/jest@v26.4.2...v26.5.3)

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

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

backend/package.json

@@ -55,7 +55,7 @@
     "@types/jsonwebtoken": "8.5.0",
     "@types/nedb": "1.8.11",
     "@types/serve-favicon": "2.5.0",
-    "jest": "26.4.2",
+    "jest": "26.5.3",
     "jest-junit": "12.0.0",
     "nodemon": "2.0.4",
     "shx": "0.3.2",

frontend/package.json

@@ -42,7 +42,7 @@
     "@types/react-color": "3.0.4",
     "@types/react-dom": "16.9.8",
     "@types/superagent": "4.1.10",
-    "jest": "26.4.2",
+    "jest": "26.5.3",
     "jest-junit": "12.0.0",
     "typescript": "4.0.3"
   },