Bump express-csp-header from 5.2.1 to 6.0.0 (#1959)

Author: dependabot[bot]

package-lock.json

@@ -55,7 +55,7 @@
     "ejs": "3.1.10",
     "es-main": "1.3.0",
     "express": "4.21.1",
-    "express-csp-header": "^5.2.1",
+    "express-csp-header": "^6.0.0",
     "express-ejs-layouts": "2.5.1",
     "express-session": "^1.18.1",
     "fs-extra": "11.2.0",