build: dictionary sort licenses names

GHA can sort differently than local.

scripts/spec-get.sh

@@ -88,7 +88,7 @@ fi
 
 if test "${key}" = "license" || test "${key}" = "license_csv"; then
   license_csv="$(reuse --root "${project_dir}" lint |
-    awk -F ':' '/^* Used licenses:/{print $2}' | tr -d " ")"
+    awk -F ':' '/^\* Used licenses:/{print $2}' | tr -d " " | sort -d)"
   license="$(echo "${license_csv}" | sed "s/,/ AND /g")"
 fi