Upgrade index-provider and update topic name

Update the topic name to be consistent with default
configured in storetheindex.

Upgrade to the latest `index-provider`.

node/config/def_test.go

@@ -55,5 +55,5 @@ func TestDefaultMinerRoundtrip(t *testing.T) {
 
 func TestDefaultStorageMiner_SetsIndexIngestTopic(t *testing.T) {
 	subject := DefaultStorageMiner()
-	require.Equal(t, "indexer/ingest", subject.IndexerProvider.PubSubTopic)
+	require.Equal(t, "/indexer/ingest/mainnet", subject.IndexerProvider.PubSubTopic)
 }