fix(cards): a11y color contrast problem (#196)

Author: mfranzke

.pa11yci

@@ -18,6 +18,7 @@
 		"http://127.0.0.1:8080/patterns/elements-toggle/index.html",
 		"http://127.0.0.1:8080/patterns/components-accordion/index.html",
 		"http://127.0.0.1:8080/patterns/components-breadcrumb/index.html",
+		"http://127.0.0.1:8080/patterns/components-cards/index.html",
 		"http://127.0.0.1:8080/patterns/components-dialog/index.html",
 		"http://127.0.0.1:8080/patterns/components-dropdown/index.html",
 		"http://127.0.0.1:8080/patterns/components-form/index.html",