Bump bridges relay version + uncomment bridges zombeinet tests (#4289)

TODOs:
- [x] wait and see if test `1` works;
- [x] ~think of whether we need remaining tests.~ I think we should keep
it - will try to revive and update it

bridges/testing/framework/js-helpers/multiple-headers-synced.js

@@ -10,33 +10,23 @@ async function run(nodeName, networkInfo, args) {
 
     // start listening to new blocks
     let totalGrandpaHeaders = 0;
-    let initialParachainHeaderImported = false;
+    let totalParachainHeaders = 0;
     api.rpc.chain.subscribeNewHeads(async function (header) {
         const apiAtParent = await api.at(header.parentHash);
         const apiAtCurrent = await api.at(header.hash);
         const currentEvents = await apiAtCurrent.query.system.events();
 
-        totalGrandpaHeaders += await utils.ensureOnlyMandatoryGrandpaHeadersImported(
-            bridgedChain,
-            apiAtParent,
-            apiAtCurrent,
-            currentEvents,
-        );
-        initialParachainHeaderImported = await utils.ensureOnlyInitialParachainHeaderImported(
-            bridgedChain,
-            apiAtParent,
-            apiAtCurrent,
-            currentEvents,
-        );
+        totalGrandpaHeaders += await utils.countGrandpaHeaderImports(bridgedChain, currentEvents);
+        totalParachainHeaders += await utils.countParachainHeaderImports(bridgedChain, currentEvents);
     });
 
     // wait given time
     await new Promise(resolve => setTimeout(resolve, exitAfterSeconds * 1000));
-    // if we haven't seen any new GRANDPA or parachain headers => fail
-    if (totalGrandpaHeaders == 0) {
+    // if we haven't seen many (>1) new GRANDPA or parachain headers => fail
+    if (totalGrandpaHeaders <= 1) {
         throw new Error("No bridged relay chain headers imported");
     }
-    if (!initialParachainHeaderImported) {
+    if (totalParachainHeaders <= 1) {
         throw new Error("No bridged parachain headers imported");
     }
 }