chore(perf)_: Use optimized endpoint to get communities (#20481)

Adapts the client code to use the new optimized endpoint to get communities with
images pointing to the media server. Related status-go PR
https://github.com/status-im/status-go/pull/5336.

src/status_im/contexts/communities/events.cljs

@@ -137,7 +137,7 @@
 
 (rf/reg-event-fx :community/fetch
  (fn [_]
-   {:json-rpc/call [{:method     "wakuext_communities"
+   {:json-rpc/call [{:method     "wakuext_serializedCommunities"
                      :params     []
                      :on-success #(rf/dispatch [:community/fetch-success %])
                      :on-error   #(log/error "failed to fetch communities" %)}

status-go-version.json

@@ -3,7 +3,7 @@
     "_comment": "Instead use: scripts/update-status-go.sh <rev>",
     "owner": "status-im",
     "repo": "status-go",
-    "version": "v0.180.30",
-    "commit-sha1": "b665d68d0cff7cd4521ac8791fcf6eac29b23cd9",
-    "src-sha256": "1bpj3x2bmrh7whhx9sb2wgwc4q8knm4c3rzvimp0s84fsvna5ynq"
+    "version": "v0.180.31",
+    "commit-sha1": "e0673ad1ffec65e3bd96a46b5054fc2d36071cc4",
+    "src-sha256": "15y3fl0q8kqxbsqj9snyg7spaqj09xid9rfza7l5zpk8p0ajqnmk"
 }