ci: Update Ubuntu Rolling Container

nlohmann-json from the system doesn't work currently.

Author: ChristianTackeGSI

test/ci/container/ubuntu.rolling.def

@@ -20,7 +20,8 @@ From: ubuntu:rolling
         doxygen graphviz clang-format clang-tidy
 
     apt-get -y --no-install-recommends install \
-        liblzma-dev liblz4-dev nlohmann-json3-dev libzstd-dev libftgl-dev
+        liblzma-dev liblz4-dev libzstd-dev libftgl-dev
+        # nlohmann-json3-dev
 
     chmod a+x /opt/fairsoft/fairsoft-install.py
     ln -s /opt/fairsoft /fairsoft