Update mnemonic example

Author: StefansArya

.env.example

@@ -1,7 +1,7 @@
 # Below is a randomly generated mnemonic, you can just copy this file into .env to run the unit tests
 
-MNEMONIC_A=burden trip pass airport nothing crouch flame blood toilet program pause peace
-WALLET_ADDRESS_A=15svm89ghWWiqjYWTKGxJyfkzcAL5Jm4HefZx3KFZaaFADrq
+MNEMONIC_A=physical west coin next mimic detail trip say slide nature hedgehog lawsuit
+WALLET_ADDRESS_A=15mkG9s2UbMikaEgvnd3vgVJKiY2n2DpH5MmrjnCREwsLsnN
 
-MNEMONIC_B=solid border arch jump panic siege plastic media wise wash media fiscal
-WALLET_ADDRESS_B=12cfUEn8FE3BQ2uKaVJf2DaPfgu1msuHYMPJkb1TP3qnGywT
+MNEMONIC_B=burden trip pass airport nothing crouch flame blood toilet program pause peace
+WALLET_ADDRESS_B=15svm89ghWWiqjYWTKGxJyfkzcAL5Jm4HefZx3KFZaaFADrq