default dev electrum to testnet4

.env.example

@@ -107,8 +107,8 @@ BITCOIN_CONFIRMATION_TIERS='[{"upToTotalFiat":"30","minConfirmations":0},{"upToT
 BITCOIN_MIN_INCOMING_ATOMIC=7 # 0.00000007 BTC (~half a USD cent at that moment)
 
 ELECTRUM_VERSION=4.8.1
-ELECTRUM_NETWORK=testnet
-ELECTRUM_SERVER=electrum.blockstream.info:60002:s
+ELECTRUM_NETWORK=testnet4
+ELECTRUM_SERVER=testnet4-electrumx.wakiyamap.dev:51002:s
 ELECTRUM_DAEMON_HOST=electrum-daemon
 ELECTRUM_DAEMON_PORT=7777
 ELECTRUM_DAEMON_RPC_USER=electrum

backend/src/modules/bitcoinWallet/services/BitcoinWalletAdminService.spec.ts

@@ -32,7 +32,7 @@ describe('BitcoinWalletAdminService', () => {
 
         configService = {
             get: jest.fn().mockReturnValue({
-                network: 'testnet'
+                network: 'testnet4'
             })
         };
 
@@ -47,7 +47,7 @@ describe('BitcoinWalletAdminService', () => {
 
         expect(status).toEqual(
             expect.objectContaining({
-                network: 'testnet',
+                network: 'testnet4',
                 rpcVersion: '4.8.1',
                 blockHeight: 900_000,
                 serverHeight: 900_000,

backend/src/types/ElectrumNetwork.ts

@@ -1,4 +1,4 @@
 export enum ElectrumNetwork {
     Mainnet = 'mainnet',
-    Testnet = 'testnet'
+    Testnet4 = 'testnet4'
 }