minor: clear expression cache before and after test

packages/bruno-js/tests/utils.spec.js

@@ -8,6 +8,7 @@ describe("utils", () => {
       }
     };
 
+    beforeEach(() => cache.clear());
     afterEach(() => cache.clear());
 
     it("should evaluate expression", () => {
@@ -65,4 +66,4 @@ describe("utils", () => {
       expect(cache.get(expr).toString()).toContain("const { hello, res } = context;");
     });
   });
-});
+});