Update node-providers.md

Added Blast API endpoints, both public and private

docs/build-on-linea/tooling/node-providers.md

@@ -4,6 +4,7 @@ title: Node Providers
 
 ## Private RPC
 
+- [BLAST API](https://blastapi.io/)
 - [Infura](https://www.infura.io/)
 - [Unifra](https://unifra.io/)
 - [DRPC](https://drpc.org/)
@@ -21,6 +22,7 @@ Public endpoints are rate limited and not meant for production systems.
 
 | Mainnet     | Testnet |
 | ----------- | ----------- |
+| https://linea-mainnet.public.blastapi.io | https://linea-goerli.public.blastapi.io
 | https://rpc.linea.build | https://rpc.goerli.linea.build |
 | https://linea.rpc.thirdweb.com | https://linea-testnet.rpc.thirdweb.com |
-| https://linea.blockpi.network/v1/rpc/public | |
+| https://linea.blockpi.network/v1/rpc/public | |