feat: update cosmwasm optimizer version (#1060)

src/pages/dev/amplifier/chain-integration/integrate-a-chain.mdx

@@ -110,7 +110,7 @@ Use the existing deployments for all three contracts, making note of the existin
     docker run --rm -v "$(pwd)":/code \
     --mount type=volume,source="$(basename "$(pwd)")_cache",target=/target \
     --mount type=volume,source=registry_cache,target=/usr/local/cargo/registry \
-    cosmwasm/optimizer:0.15.1
+    cosmwasm/optimizer:0.16.0
     ```
 
     This process can take many minutes as it will compile all of the contracts in the repository. Any `unused import` warnings during this process can be ignored.