Reorder BSC rpc urls (#752)

### Description

The ankr BSC public rpc url fails too often

Author: nambrot

.changeset/pink-socks-pretend.md

@@ -0,0 +1,5 @@
+---
+"@hyperlane-xyz/registry": patch
+---
+
+Reorder BSC rpc urls

chains/arbitrum/metadata.yaml

@@ -29,7 +29,7 @@ nativeToken:
   symbol: ETH
 protocol: ethereum
 rpcUrls:
+  - http: https://arb1.arbitrum.io/rpc
   - http: https://arbitrum.llamarpc.com
   - http: https://rpc.ankr.com/arbitrum
-  - http: https://arb1.arbitrum.io/rpc
 technicalStack: arbitrumnitro

chains/bsc/metadata.yaml

@@ -24,7 +24,7 @@ nativeToken:
   symbol: BNB
 protocol: ethereum
 rpcUrls:
-  - http: https://rpc.ankr.com/bsc
   - http: https://bsc.drpc.org
   - http: https://bscrpc.com
+  - http: https://rpc.ankr.com/bsc
 technicalStack: other