CI:: fix download micro mambda

HZDR is blocking all `anaconda` server. If we download micromamba via
the offical link `https://micro.mamba.pm/api/micromamba/linux-64/latest`
the load balancer is sometimes pointing us to the anaconda mirrow which
is not accesible from within HZDR.

The current workaround is to pull micromamba 1.5.9 directly from github.

ci: no-compile

share/ci/install/pypicongpu.sh

@@ -25,9 +25,11 @@ export PIC_EXAMPLES=$PICSRC/share/picongpu/examples
 cd $CI_PROJECT_DIR
 
 # use miniconda as python environment
+export MAMBA_SSL_NO_REVOKE=True
+
 apt update && apt install -y curl
 cd /tmp/
-curl -Ls https://micro.mamba.pm/api/micromamba/linux-64/latest | tar -xvj bin/micromamba
+curl -Ls https://github.com/mamba-org/micromamba-releases/releases/download/1.5.9-0/micromamba-linux-64.tar.bz2 | tar -xvj bin/micromamba
 export MAMBA_ROOT_PREFIX=/tmp/mamba-forge/
 mkdir -p "${MAMBA_ROOT_PREFIX}"
 eval "$(./bin/micromamba shell hook -s posix)"