Add --skip-cleanup to try scenarios so we don't error doing work we don't need to do

Author: NullVoxPopuli

.github/workflows/ci.yml

@@ -139,7 +139,7 @@ jobs:
       - name: Test
         env:
           EMBER_TRY_SCENARIO: ${{ matrix.ember-try-scenario }}
-        run: node_modules/.bin/ember try:one $EMBER_TRY_SCENARIO
+        run: node_modules/.bin/ember try:one $EMBER_TRY_SCENARIO --skip-cleanup
         working-directory: test-app
 
   docs: