[7.3] a817c266f Switch to the 7.3 branch of pkg-varnish-cache

[Simon Stridsberg]

commit a817c266f074147ba75e29c84051acb631d058cd
Author: Simon Stridsberg <simon.stridsberg at varnish-software.com>
Date:   Thu Mar 16 06:55:30 2023 +0100

    Switch to the 7.3 branch of pkg-varnish-cache

diff --git a/.circleci/config.yml b/.circleci/config.yml
index accac691a..1dde7243e 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -6,7 +6,7 @@ parameters:
     default: "HEAD"
   pkg-commit:
     type: string
-    default: "master"
+    default: "7.3"
   dist-url:
     type: string
     default: ""