update version support matrix (#175)

Author: jbrower95

README.md

@@ -9,8 +9,8 @@ At all times, refer to the `mainnet`, `testnet`, and `preprod` git tags to under
 | Environment    |     Version   |
 | -------------- | ------------- |
 | Mainnet        |       [0.3.6](https://github.com/Layr-Labs/eigenpod-proofs-generation/releases/tag/0.3.6) |
-| Testnet        |       [1.2.0](https://github.com/Layr-Labs/eigenpod-proofs-generation/releases/tag/1.2.0) |
-| Preprod        |       [1.2.0](https://github.com/Layr-Labs/eigenpod-proofs-generation/releases/tag/1.2.0) |
+| Testnet        |       [1.3.0](https://github.com/Layr-Labs/eigenpod-proofs-generation/releases/tag/1.3.0) |
+| Preprod        |       [1.3.0](https://github.com/Layr-Labs/eigenpod-proofs-generation/releases/tag/1.3.0) |
 
 # Introduction