ci: Updated release-lambda-init-containers.yml to use shared machine user token (newrelic#3399)

Author: bizob2828

.github/workflows/release-lambda-init-containers.yml

@@ -30,4 +30,4 @@ jobs:
           echo "newrelic/newrelic-agent-init-container - Releasing \"${RELEASE_TITLE}\" with tag ${RELEASE_TAG}"
           gh release create "${RELEASE_TAG}" --title="${RELEASE_TITLE}" --repo=newrelic/newrelic-agent-init-container --notes="${RELEASE_NOTES}"
         env:
-          GH_RELEASE_TOKEN: ${{ secrets.GH_RELEASE_TOKEN }}
+          GH_RELEASE_TOKEN: ${{ secrets.NODE_AGENT_GH_TOKEN }}