k/matrix/synapse: increase rate limits to allow for slack bridging

kustomizations/matrix/synapse/files/homeserver.yaml

@@ -49,6 +49,20 @@ listeners:
       - name: [metrics]
         compress: true
 
+# Rate Limit
+rc_invites:
+  per_room:
+    burst_count: 200
+  per_user:
+    burst_count: 200
+rc_joins:
+  local:
+    burst_count: 200
+  remote:
+    burst_count: 200
+rc_joins_per_user:
+  burst_count: 200 
+
 # Registration
 registration:
   enabled: false