ci: add parallelism flags to turbo build command

Co-Authored-By: Jayant Krishnamurthy <jayant@dourolabs.xyz>

package.json

@@ -7,7 +7,7 @@
     "pnpm": "^9.15.3"
   },
   "scripts": {
-    "build:ci": "turbo build --filter=!./apps/api-reference --filter=!./apps/insights --filter=!./apps/staking",
+    "build:ci": "turbo build --filter=!./apps/api-reference --filter=!./apps/insights --filter=!./apps/staking --concurrency=10 --parallel",
     "example:hermes-client": "pnpm i && turbo example --filter @pythnetwork/hermes-client --ui stream",
     "fix": "pnpm i && turbo fix",
     "publish": "lerna publish from-package --no-private --no-git-tag-version --yes",