Fix typo in path for config

.github/workflows/tests.yml

@@ -80,7 +80,7 @@ jobs:
         EMAIL_SECRET : secret_fake_email@gmail.com
         PASSWORD_SECRET : foobar
       run: |
-        echo EMAIL_SECRET = $EMAIL_SECRET$'\n'PASSWORD_SECRET = $PASSWORD_SECRET >> DaysUntilBirthdayUITests(iOS)/Credentials.xcconfig
+        echo EMAIL_SECRET = $EMAIL_SECRET$'\n'PASSWORD_SECRET = $PASSWORD_SECRET >> DaysUntilBirthdayUITests\(iOS\)/Credentials.xcconfig
     - name: Build test target for Google Sign-in button for Swift
       run: |
         xcodebuild \