build action, mitigates post-job cleanup, removes travis

Author: NReilingh

.github/workflows/zunit.yml

@@ -9,7 +9,8 @@ jobs:
 
     steps:
     - uses: actions/checkout@v2
-      if: always() # Prevent suppresion of cleanup in the event of a test failure.
+      with:
+        persist-credentials: false # Cleanup doesn't run if a test fails.
     - run: brew install zunit-zsh/zunit/zunit
     - name: Run ZUnit
       run: zunit -t --output-html --output-text