ci: fix coldcard build

Author: brunoerg

.github/actions/install-sim/action.yml

@@ -30,6 +30,7 @@ runs:
         pushd test/work/firmware; git am ../../data/coldcard-multisig.patch; popd
         poetry run pip install -r test/work/firmware/requirements.txt
         pip install -r test/work/firmware/requirements.txt
+        pip install pysdl2-dll
 
     - if: inputs.device == 'bitbox01'
       shell: bash