static data generation with cache

package-lock.json

@@ -12,7 +12,6 @@
         "@types/react": "18.2.6",
         "@types/react-dom": "18.2.4",
         "autoprefixer": "10.4.14",
-        "dotenv-expand": "^10.0.0",
         "eslint": "8.41.0",
         "eslint-config-next": "13.4.3",
         "leaflet": "^1.9.4",
@@ -3520,14 +3519,6 @@
         "node": ">=12"
       }
     },
-    "node_modules/dotenv-expand": {
-      "version": "10.0.0",
-      "resolved": "https://registry.npmjs.org/dotenv-expand/-/dotenv-expand-10.0.0.tgz",
-      "integrity": "sha512-GopVGCpVS1UKH75VKHGuQFqS1Gusej0z4FyQkPdwjil2gNIv+LNsqBlboOzpJFZKVT95GkCyWJbBSdFEFUWI2A==",
-      "engines": {
-        "node": ">=12"
-      }
-    },
     "node_modules/ecc-jsbn": {
       "version": "0.1.2",
       "resolved": "https://registry.npmjs.org/ecc-jsbn/-/ecc-jsbn-0.1.2.tgz",