Update block explorer for mantle and mantle-sepolia-testnet

Author: hiletmis

chains/mantle-sepolia-testnet.json

@@ -4,11 +4,11 @@
   "explorer": {
     "api": {
       "key": {
-        "required": false
+        "required": true
       },
-      "url": "https://explorer.sepolia.mantle.xyz/api"
+      "url": "https://api-sepolia.mantlescan.xyz/api"
     },
-    "browserUrl": "https://explorer.sepolia.mantle.xyz/"
+    "browserUrl": "https://sepolia.mantlescan.xyz/"
   },
   "id": "5003",
   "name": "Mantle testnet",

chains/mantle.json

@@ -4,11 +4,11 @@
   "explorer": {
     "api": {
       "key": {
-        "required": false
+        "required": true
       },
-      "url": "https://explorer.mantle.xyz/api"
+      "url": "https://api.mantlescan.xyz/api"
     },
-    "browserUrl": "https://explorer.mantle.xyz/"
+    "browserUrl": "https://mantlescan.xyz/"
   },
   "id": "5000",
   "name": "Mantle",

src/generated/chains.ts

@@ -1051,8 +1051,8 @@ export const CHAINS: Chain[] = [
     alias: 'mantle-sepolia-testnet',
     decimals: 18,
     explorer: {
-      api: { key: { required: false }, url: 'https://explorer.sepolia.mantle.xyz/api' },
-      browserUrl: 'https://explorer.sepolia.mantle.xyz/',
+      api: { key: { required: true }, url: 'https://api-sepolia.mantlescan.xyz/api' },
+      browserUrl: 'https://sepolia.mantlescan.xyz/',
     },
     id: '5003',
     name: 'Mantle testnet',
@@ -1064,8 +1064,8 @@ export const CHAINS: Chain[] = [
     alias: 'mantle',
     decimals: 18,
     explorer: {
-      api: { key: { required: false }, url: 'https://explorer.mantle.xyz/api' },
-      browserUrl: 'https://explorer.mantle.xyz/',
+      api: { key: { required: true }, url: 'https://api.mantlescan.xyz/api' },
+      browserUrl: 'https://mantlescan.xyz/',
     },
     id: '5000',
     name: 'Mantle',