Update CTA when new method is selected

src/layouts/payment-method/payment-method.vue

@@ -8,6 +8,7 @@
             <paymentMethodQuestion v-model="paymentMethod" />
             <div class="fade-on-route-transition sub-container make-tall">
                 <funnel-footer
+                    ref="funnelFooter"
                     cmsWidgetName="FunnelFooterWidget"
                     :isForwardActionDisabled="!meta.valid"
                     :isBackButtonHidden="shouldHideBackButton"
@@ -80,6 +81,11 @@ export default {
             }
         },
     },
+    watch: {
+        customCtaCopy(newValue) {
+            this.$refs.funnelFooter.updateButtonText(newValue);
+        },
+    },
     components: {
         funnelHeader,
         funnelFooter,