test: fix secure cookie test with Go 1.26

See: golang/go@7aa9ca7

Signed-off-by: Doug MacEachern <doug.maceachern@broadcom.com>

Author: dougm

govc/test/cli.bats

@@ -208,7 +208,7 @@ load test_helper
 
   vcsim_stop
 
-  VCSIM_SECURE_COOKIES=true vcsim_start -tls=false
+  VCSIM_SECURE_COOKIES=true vcsim_start -tls=false -l 0.0.0.0:0
 
   run govc ls
   assert_failure