fix(deps): update dependency next to v15.5.8 [security]

Author: renovate[bot]

frontends/main/package.json

@@ -30,7 +30,7 @@
     "jsdom": "^27",
     "lodash": "^4.17.21",
     "moment": "^2.30.1",
-    "next": "15.5.7",
+    "next": "15.5.8",
     "next-nprogress-bar": "^2.4.2",
     "ol-components": "0.0.0",
     "ol-utilities": "0.0.0",

frontends/ol-components/package.json

@@ -54,7 +54,7 @@
     "lodash": "^4.17.21",
     "lodash.throttle": "^4.1.1",
     "material-ui-popup-state": "^5.1.0",
-    "next": "15.5.7",
+    "next": "15.5.8",
     "ol-test-utilities": "0.0.0",
     "ol-utilities": "0.0.0",
     "react": "^19.2.1",