clean up sinon after tests

Author: LiranCohen

packages/agent/tests/rpc-client.spec.ts

@@ -14,6 +14,10 @@ describe('RPC Clients', () => {
       client = new HttpDwnRpcClient();
     });
 
+    after(() => {
+      sinon.restore();
+    });
+
     it('should retrieve subsequent result from cache', async () => {
       // we spy on fetch to see how many times it is called
       const fetchSpy = sinon.spy(globalThis, 'fetch');
@@ -55,6 +59,10 @@ describe('RPC Clients', () => {
   describe('Web5RpcClient', () => {
     let client: Web5RpcClient;
 
+    after(() => {
+      sinon.restore();
+    });
+
     beforeEach(async () => {
       sinon.restore();
       client = new Web5RpcClient();