chore(pricefeed) Add Abstract chain address (#442)

Author: aditya520

pages/price-feeds/contract-addresses/evm.mdx

@@ -69,6 +69,7 @@ Pyth is currently available on the EVM networks below using Pyth Stable price so
 
 | Network                           | Contract address                                                                                                                                                             |
 | --------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
+| Abstract testnet                  | [`0x47F2A9BDAd52d65b66287253cf5ca0D2b763b486`](https://explorer.testnet.abs.xyz/address/0x47F2A9BDAd52d65b66287253cf5ca0D2b763b486)                                          |
 | Ape Chain (testnet)               | [`0x2880aB155794e7179c9eE2e38200202908C17B43`](https://curtis.explorer.caldera.xyz/address/0x2880aB155794e7179c9eE2e38200202908C17B43)                                       |
 | Arbitrum Blueberry (testnet)      | [`0xA2aa501b19aff244D90cc15a4Cf739D2725B5729`](https://arb-blueberry.gelatoscout.com/address/0xA2aa501b19aff244D90cc15a4Cf739D2725B5729)                                     |
 | Arbitrum Sepolia (testnet)        | [`0x4374e5a8b9C22271E9EB878A2AA31DE97DF15DAF`](https://sepolia-explorer.arbitrum.io/address/0x4374e5a8b9C22271E9EB878A2AA31DE97DF15DAF)                                      |