fix: package.json & yarn.lock to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-PATHTOREGEXP-7925106
- https://snyk.io/vuln/SNYK-JS-BRACES-6838727

package.json

@@ -58,7 +58,7 @@
     "es6-symbol": "^3.1.3",
     "escape-html": "^1.0.3",
     "exif-js": "^2.3.0",
-    "express": "^4.18.2",
+    "express": "^4.20.0",
     "file-loader": "^6.2.0",
     "font-awesome": "^4.7.0",
     "fuzzysort": "^1.9.0",
@@ -118,7 +118,7 @@
     "requestidlecallback": "^0.3.0",
     "reselect": "^4.1.6",
     "rimraf": "^3.0.2",
-    "sass": "^1.55.0",
+    "sass": "^1.79.0",
     "sass-loader": "^10.2.0",
     "stacktrace-js": "^2.0.2",
     "stringz": "^2.1.0",