enable h2 option for http2 to http2 test

Author: vhess

lib/test/http/proxy-http2-to-http2.test.ts

@@ -46,6 +46,7 @@ describe("Basic example of proxying over HTTP2 to a target HTTP2 server", () =>
       .createServer({
         target: `https://localhost:${ports.http2}`,
         ssl,
+        agentOptions: { allowH2: true },
         // without secure false, clients will fail and this is broken:
         secure: false,
       })