fix(solana-receiver-js): Add test script to make prepublishOnly work (#1327)

Author: m30m

target_chains/solana/sdk/js/pyth_solana_receiver/package.json

@@ -20,6 +20,7 @@
     "build": "tsc",
     "format": "prettier --write \"src/**/*.ts\"",
     "lint": "eslint src/",
+    "test": "jest src/ --passWithNoTests",
     "prepublishOnly": "npm run build && npm test && npm run lint",
     "preversion": "npm run lint",
     "version": "npm run format && git add -A src"