Add Girocard payment method icon (#2991)

Author: kamenlitchev

.changeset/stale-carrots-pull.md

@@ -0,0 +1,5 @@
+---
+'@sumup-oss/icons': minor
+---
+
+Added a new `Girocard` payment method icon in size 24.

packages/icons/manifest.json

@@ -1653,6 +1653,11 @@
       "category": "Payment method",
       "size": "24"
     },
+    {
+      "name": "girocard",
+      "category": "Payment method",
+      "size": "24"
+    },
     {
       "name": "giropay",
       "category": "Payment method",