fix: replace deprecated Polygon explorer API with Etherscan v2

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@trustvc/trustvc",
-  "version": "2.14.0",
+  "version": "2.14.1",
   "description": "TrustVC library",
   "main": "dist/cjs/index.js",
   "module": "dist/esm/index.js",

src/utils/supportedChains/index.ts

@@ -84,7 +84,7 @@ export const SUPPORTED_CHAINS: supportedChains = {
     currency: 'POL',
     iconImage: iconPolygon,
     explorerUrl: 'https://amoy.polygonscan.com',
-    explorerApiUrl: `https://api-amoy.polygonscan.com/api?apikey=${process.env.POLYGONSCAN_API_KEY}`,
+    explorerApiUrl: `https://api.etherscan.io/v2/api?apikey=${process.env.POLYGONSCAN_API_KEY}&chainid=80002`,
     rpcUrl: `https://polygon-amoy.infura.io/v3/${process.env.INFURA_API_KEY}`,
     gasStation: gasStation('https://gasstation.polygon.technology/amoy'),
     nativeCurrency: {

src/utils/supportedChains/supportedChains.test.ts

@@ -57,11 +57,12 @@ describe('supportedChains', () => {
     expect(rpcUrl).toContain('https://polygon-amoy.infura.io/v3/');
   });
 
-  it('should use PolygonScan as the explorer API for amoy', () => {
+  it('should use Etherscan v2 as the explorer API for amoy', () => {
     const { explorerApiUrl } = SUPPORTED_CHAINS[CHAIN_ID.amoy];
 
-    expect(explorerApiUrl).toContain('https://api-amoy.polygonscan.com/api');
+    expect(explorerApiUrl).toContain('https://api.etherscan.io/v2/api');
     expect(explorerApiUrl).toContain('apikey=');
+    expect(explorerApiUrl).toContain('chainid=80002');
   });
 
   it('should sepolia chain info correctly', () => {