add edit snippet use case

bruno/CodeSnippets/edit_snippet.bru

@@ -0,0 +1,22 @@
+meta {
+  name: edit_snippet
+  type: http
+  seq: 7
+}
+
+patch {
+  url: {{host}}/api/snippet?id=680a3508-7709-4f71-b5c3-3dcbffe6f5cf
+  body: json
+  auth: none
+}
+
+params:query {
+  id: 680a3508-7709-4f71-b5c3-3dcbffe6f5cf
+}
+
+body:json {
+  {
+    "title": "Updated from Bruno",
+    "tags": ["code", "mock"]
+  }
+}