It turned out, that the previous maintainer of log4net NuGet package @dotnetjunky was assigned mistakenly. So nobody was actually maintaining that package. After few messages with him, we decided, I’ll take over the ownership and maintain it.
Today I uploaded package with new version 1.2.11 (I used the binaries signed with new key so any new dependencies will follow this recommended usage), and I’ll try my best to keep the package up-to-date. Enjoy.