chore: Fix types in tests 31/N.

src/agents/tools/web-fetch.ssrf.e2e.test.ts

@@ -16,7 +16,7 @@ function redirectResponse(location: string): Response {
     status: 302,
     headers: makeHeaders({ location }),
     body: { cancel: vi.fn() },
-  } as Response;
+  } as unknown as Response;
 }
 
 function textResponse(body: string): Response {
@@ -25,7 +25,7 @@ function textResponse(body: string): Response {
     status: 200,
     headers: makeHeaders({ "content-type": "text/plain" }),
     text: async () => body,
-  } as Response;
+  } as unknown as Response;
 }
 
 function setMockFetch(impl?: (...args: unknown[]) => unknown) {