Update cvmfs.yml

Author: atsareg

.github/workflows/cvmfs.yml

@@ -19,6 +19,7 @@ jobs:
           conda info
           conda info --envs
           conda list
+          conda activate base
           conda install ca-policy-lcg openssl==3.0.7 gct
 
           echo "$CVMFS_PROXY_BASE64" | base64 --decode > cvmfs.proxy