modrinth: quietly skips some projects, such as easyauth and fabrictailor

[itzg]

From itzg/docker-minecraft-server#2227

Such as with

-e MODRINTH_PROJECTS=fabric-api,lithium,easyauth,luckperms,fabrictailor

Also it logs downloading of the successful ones every time:

[mc-image-helper] 13:33:45.958 INFO  : Downloading fabric-api-0.83.1+1.20.1.jar
[mc-image-helper] 13:33:46.201 INFO  : Downloading lithium-fabric-mc1.20.1-0.11.2.jar
[mc-image-helper] 13:33:46.722 INFO  : Downloading LuckPerms-Fabric-5.4.88.jar