[8.0] 855a97d6e cci: Build from 8.0 pkg-varnish-cache branch

[Walid Boudebouda]

commit 855a97d6ecf60293bebcc1d2dbce1e9510573bba
Author: Walid Boudebouda <walid.boudebouda at gmail.com>
Date:   Mon Sep 15 17:41:27 2025 +0200

    cci: Build from 8.0 pkg-varnish-cache branch

diff --git a/.circleci/config.yml b/.circleci/config.yml
index 4aa420d3f..96cd1570f 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -6,7 +6,7 @@ parameters:
     default: "HEAD"
   pkg-commit:
     type: string
-    default: "master"
+    default: "8.0"
   dist-url:
     type: string
     default: ""