Fix & explicitly enable v22 testing in CI

This requires updating some tests we had which sent invalid line endings
(unintentionally, while testing other types of invalid request) - HTTP
does strictly require \r\n, not just \n.

.github/workflows/ci.yml

@@ -7,7 +7,7 @@ jobs:
 
     strategy:
       matrix:
-        node-version: [14.x, 16.x, 18.x, 20.x, v20.11.1, '*']
+        node-version: [14.x, 16.x, 18.x, 20.x, v20.11.1, 22.x, '*']
 
     steps:
       - uses: actions/checkout@v4

test/integration/proxying/http-proxying.spec.ts

@@ -70,7 +70,7 @@ nodeOnly(() => {
             it("should mock proxied HTTP matching badly formatted URLs with empty paths", async () => {
                 await server.forGet('/').thenReply(200, 'Mock response');
 
-                const response = await sendRawRequest(server, 'GET http://example.com HTTP/1.1\n\n');
+                const response = await sendRawRequest(server, 'GET http://example.com HTTP/1.1\r\n\r\n');
                 expect(response).to.include('HTTP/1.1 200 OK');
                 expect(response).to.include('Mock response');
             });

test/integration/subscriptions/request-events.spec.ts

@@ -312,7 +312,7 @@ describe("Request subscriptions", () => {
                 let seenRequestPromise = getDeferred<CompletedRequest>();
                 await server.on('request', (r) => seenRequestPromise.resolve(r));
 
-                sendRawRequest(server, 'GET http://example.com HTTP/1.1\n\n');
+                sendRawRequest(server, 'GET http://example.com HTTP/1.1\r\n\r\n');
 
                 let seenRequest = await seenRequestPromise;
                 expect(seenRequest.url).to.equal('http://example.com');