Compare lines iterator instead of full output

This avoids differences in line endings.

.github/workflows/main.yml

@@ -79,10 +79,6 @@ jobs:
         git config --global user.email "user@example.com"
         git config --global user.name "User"
         ./y.rs prepare
-        
-
-    - name: log expected output
-      run: cat -e regex/examples/regexdna-output.txt
 
     - name: Build without unstable features
       env: