ci: decrease shards

Author: jxom

.github/workflows/verify.yml

@@ -78,8 +78,8 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        shard: [1, 2, 3, 4]
-        total-shards: [4]
+        shard: [1, 2, 3]
+        total-shards: [3]
         transport-mode: ['http', 'webSocket']
         include:
           - batch-multicall: 'false'