message: Update polygon/mumbai apiBaseUrl
diff: @@ -196,7 +196,7 @@ const constants: {
  ...hubUrl,
  ...polygonNativeTokens,
  tokenList: polygonTokenList,
  - apiBaseUrl: 'https://api-testnet.polygon.io/api', // TODO: add official polygon api
  + apiBaseUrl: 'https://api.polygonscan.com/api',
  blockExplorer: 'https://polygonscan.com',
  name: 'Polygon',
  chainId: 137,
  @@ -209,7 +209,7 @@ const constants: {
  ...testHubUrl,
  ...polygonNativeTokens,
  tokenList: mumbaiTokenList,
  - apiBaseUrl: 'https://api-testnet.polygon.io/api',
  + apiBaseUrl: 'https://api-testnet.polygonscan.com/api',
  blockExplorer: 'https://mumbai.polygonscan.com',
  name: 'Mumbai',
  relayServiceURL: 'https://relay-mumbai.staging.stack.cards/api',
  