check if cross is populated (#7)

* check if cross is populated

* add echo

* oops

* yeet

action.yml

@@ -47,7 +47,7 @@ runs:
       shell: bash
       run: |
         # Assign inputs to variables if needed
-        if [[ "${{inputs.use-cross}}" == false ]]; then
+        if [[ -z "${{inputs.use-cross}}" || "${{inputs.use-cross}}" != "true" ]]; then
           echo "invoker=cargo" >> $GITHUB_OUTPUT;
         else
           echo "invoker=cross" >> $GITHUB_OUTPUT;