chore: avoid concurrent usage of t.FailNow (#1683)

* chore: golangci: add linter rule to report usage of t.FailNow inside goroutines
* chore: avoid t.FailNow in goroutines to appease the race detector

cli/server_test.go

@@ -57,7 +57,7 @@ func TestServer(t *testing.T) {
 				return false
 			}
 			accessURL, err := url.Parse(rawURL)
-			require.NoError(t, err)
+			assert.NoError(t, err)
 			client = codersdk.New(accessURL)
 			return true
 		}, 15*time.Second, 25*time.Millisecond)