fix(guix): add --disable-authentication

steps-guix/improve/guix-build-iso.sh

@@ -23,7 +23,8 @@ iso_store_path="$(guix system image \
     --system=x86_64-linux \
     -t iso9660 \
     -e '(@@ (gnu system install) installation-os)' \
-    --no-substitutes)"
+    --no-substitutes \
+    --disable-authentication)"
 
 if [ ! -e "${iso_store_path}" ]; then
     echo "guix system image did not return a valid path: ${iso_store_path}" >&2

steps-guix/improve/guix-daemon-and-pull.sh

@@ -231,4 +231,4 @@ EOF
 
 chmod 0644 "${channels_file}"
 
-guix pull --bootstrap --no-substitutes --channels="${channels_file}"
+guix pull --bootstrap --no-substitutes --channels="${channels_file}" --disable-authentication