[master] b10d610bb debug.slow filter: Coverage

[Nils Goroll]

commit b10d610bb331a543b43a4b8cfc3242d5ef1f68b8
Author: Nils Goroll <nils.goroll at uplex.de>
Date:   Mon Jul 14 19:28:58 2025 +0200

    debug.slow filter: Coverage

diff --git a/bin/varnishtest/tests/m00048.vtc b/bin/varnishtest/tests/m00048.vtc
index bcd94925a..a643c83d6 100644
--- a/bin/varnishtest/tests/m00048.vtc
+++ b/bin/varnishtest/tests/m00048.vtc
@@ -30,7 +30,7 @@ varnish v1 -vcl+backend {
 	import debug;
 
 	sub vcl_backend_response {
-		set beresp.filters = "rot13 rot13a";
+		set beresp.filters = "rot13 debug.slow rot13a";
 	}
 }