tests: update regex check for fetch error in test-clonebundles.t

On some systems, e.g. Docker container, the actual error may be:

  error fetching bundle: [Errno 99] Cannot assign requested address

Update the regex to handle this case.

tests/test-clonebundles.t

@@ -62,7 +62,7 Server is not running aborts
   $ echo "http://localhost:$HGPORT1/bundle.hg" > server/.hg/clonebundles.manifest
   $ hg clone http://localhost:$HGPORT server-not-runner
   applying clone bundle from http://localhost:$HGPORT1/bundle.hg
-  error fetching bundle: (.* refused.*|Protocol not supported|Cannot assign requested address) (re)
+  error fetching bundle: (.* refused.*|Protocol not supported|(.* )?Cannot assign requested address) (re)
   abort: error applying bundle
   (if this error persists, consider contacting the server operator or disable clone bundles via "--config ui.clonebundles=false")
   [255]