Attempt to fix micromamba config issues

Author: lukelbd

.travis.yml

@@ -21,9 +21,9 @@ before_install:
   - curl micro.mamba.pm/install.sh | bash
   - export PATH="$HOME/micromamba/bin:$PATH"
   - hash -r
-  - micromamba config --set always_yes true
-  - micromamba config --set changeps1 false
-  - micromamba config --set show_channel_urls true
+  - micromamba config set always_yes true
+  - micromamba config set changeps1 false
+  - micromamba config set show_channel_urls true
 
 install:
   - micromamba env create --file ci/environment.yml