fix postcss vulnerability

Author: algo-1

1-Authentication/1-sign-in-react/SPA/package-lock.json

@@ -45,5 +45,8 @@
             "last 1 firefox version",
             "last 1 safari version"
         ]
+    },
+    "overrides": {
+        "postcss" : "8.4.41"
     }
 }

1-Authentication/1-sign-in-react/SPA/package.json

@@ -43,5 +43,8 @@
             "last 1 firefox version",
             "last 1 safari version"
         ]
+    },
+    "overrides": {
+        "postcss" : "8.4.41"
     }
 }