Update deploy script to work with PRs
Update deploy script to work with PRs

Previously it would error out for PRs since they don't have deploy credentials set up. Now it just skips deploy (but still bundles).

zenorocha/html-as-custom-elements,valmzetvn/html-as-custom-elements,domenic/html-as-custom-elements,zenorocha/html-as-custom-elements,domenic/html-as-custom-elements,valmzetvn/html-as-custom-elements,valmzetvn/html-as-custom-elements,domenic/html-as-custom-elements