Update versions in packaging/java-agent-release.txt etc. and fix renovate

[basti1302]

• dotnet-agent-release.txt
• java-agent-release.txt
• nodejs-agent-release.txt

There is already a renovate config for them. I don't see any renovate PRs for those versions though. What gives?

[atoulme]

I probably didn't do a good job there. It's my first time setting up renovate in this manner.

[atoulme]

Second attempt didn't work, will keep trying.