Decrease ccr.auto_follow.wait_for_metadata_timeout in ccr rolling upgrade test,

in order to reduce the likelihood the test fails because of timeing issues.

Relates #37231

x-pack/qa/rolling-upgrade/build.gradle

@@ -186,6 +186,10 @@ subprojects {
         setting 'xpack.watcher.encrypt_sensitive_data', 'true'
       }
 
+      if (version.onOrAfter('6.6.0')) {
+        setting 'ccr.auto_follow.wait_for_metadata_timeout', '1s'
+      }
+
       // Old versions of the code contain an invalid assertion that trips
       // during tests.  Versions 5.6.9 and 6.2.4 have been fixed by removing
       // the assertion, but this is impossible for released versions.