chore(pricefeed) Add unichain sepolia (#447)

Author: aditya520

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

@@ -141,7 +141,8 @@ Pyth is currently available on the EVM networks below using Pyth Stable price so
 | Sepolia (Ethereum testnet)        | [`0xDd24F84d36BF92C65F92307595335bdFab5Bbd21`](https://sepolia.etherscan.io/address/0xDd24F84d36BF92C65F92307595335bdFab5Bbd21)                                              |
 | Shimmer testnet                   | [`0x8D254a21b3C86D32F7179855531CE99164721933`](https://explorer.evm.testnet.shimmer.network/address/0x8D254a21b3C86D32F7179855531CE99164721933)                              |
 | Soneium (testnet)                 | [`0x2880aB155794e7179c9eE2e38200202908C17B43`](https://explorer-testnet.soneium.org/address/0x2880aB155794e7179c9eE2e38200202908C17B43)                                      |
-| Sonic Fantom Testnet              | [`0x96124d1f6e44ffdf1fb5d6d74bb2de1b7fb`](https://testnet.soniclabs.com/address/0x96124d1f6e44ffdf1fb5d6d74bb2de1b7fbe7376)                                                  |
+| Sonic Fantom Testnet              | [`0x96124d1f6e44ffdf1fb5d6d74bb2de1b7fb`](https://unichain-sepolia.blockscout.com/address/0x2880aB155794e7179c9eE2e38200202908C17B43)                                        |
+| Unichain Sepolia                  | [`0x2880aB155794e7179c9eE2e38200202908C17B43`](https://sepolia.unichainscan.com/address/0x2880aB155794e7179c9eE2e38200202908C17B43)                                          |
 | Viction testnet                   | [`0x5D289Ad1CE59fCC25b6892e7A303dfFf3a9f7167`](https://testnet.tomoscan.io/address/0x5D289Ad1CE59fCC25b6892e7A303dfFf3a9f7167)                                               |
 | WEMIX testnet                     | [`0x26DD80569a8B23768A1d80869Ed7339e07595E85`](https://explorer.test.wemix.com/address/0x26DD80569a8B23768A1d80869Ed7339e07595E85)                                           |
 | ZKFair testnet                    | [`0xA2aa501b19aff244D90cc15a4Cf739D2725B5729`](https://testnet-scan.zkfair.io/address/0xA2aa501b19aff244D90cc15a4Cf739D2725B5729)                                            |