Use http for proxy mirror instead of https

Author: taylorific

autoinstall/generic/ubuntu-desktop-2404/headless/autoinstall.yaml

@@ -28,11 +28,11 @@ autoinstall:
     preserve_sources_list: false
     mirror-selection:
       primary:
-        # http://archive.ubuntu.com/ubntu
-        - uri: "https://crake-nexus.org.boxcutter.net/repository/ubuntu-archive-apt-proxy/ubuntu"
+        # http://archive.ubuntu.com/ubuntu
+        - uri: "http://crake-nexus.org.boxcutter.net/repository/ubuntu-archive-apt-proxy/ubuntu"
           arches: [i386, amd64]
         # http://ports.ubuntu.com/ubuntu-ports
-        - uri: "https://crake-nexus.org.boxcutter.net/repository/ubuntu-ports-proxy/ubuntu-ports"
+        - uri: "http://crake-nexus.org.boxcutter.net/repository/ubuntu-ports-proxy/ubuntu-ports"
           arches: [s390x, arm64, armhf, powerpc, ppc64el, riscv64]
   packages:
     - qemu-guest-agent