Building

export JAVA_HOME=/Library/Java/JavaVirtualMachines/temurin-21.jdk/Contents/Home
./gradlew :neo21:shadowJar

Output: neo21/build/libs/ReforgedBingo-NeoForge-3.1.0-snowbird.<n>.jar. Every repository it needs is public (EnvyWare's maven and the ivy repo that serves Pixelmon), so no credentials are needed. Only publish needs them, and it is never run.