Enable HTTP server in CI configs

The QWP WebSocket sender connects to QuestDB's HTTP port (9000)
for the WebSocket upgrade at /write/v4. Both CI server configs
had http.enabled=false, which prevented the HTTP listener from
starting. PG wire tests (port 8812) were unaffected, but all
QwpSenderTest cases failed with "Failed to connect to
127.0.0.1:9000".

Set http.enabled=true in both default and authenticated configs.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: mtopolnik

ci/confs/authenticated/server.conf

@@ -40,7 +40,7 @@ config.validation.strict=true
 ################ HTTP settings ##################
 
 # enable HTTP server
-http.enabled=false
+http.enabled=true
 
 # IP address and port of HTTP server
 #http.net.bind.to=0.0.0.0:9000

ci/confs/default/server.conf

@@ -40,7 +40,7 @@ config.validation.strict=true
 ################ HTTP settings ##################
 
 # enable HTTP server
-http.enabled=false
+http.enabled=true
 
 # IP address and port of HTTP server
 #http.net.bind.to=0.0.0.0:9000