Consider more builds when looking for published snapshot

Instead of filtering the builds to 1 and then
assuming we can select "published" from that list
this commit changes the lookup to read the default
number of builds, which is by default 10, and then
selects the latest published.

References:
 * https://progress.opensuse.org/issues/165722
 * os-autoinst/os-autoinst-distri-opensuse@2599029

.github/workflows/openqa.yml

@@ -26,8 +26,8 @@ jobs:
         run: >-
           echo build=$(openqa-cli api
           --host ${OPENQA_HOST:-https://openqa.opensuse.org}
-          job_groups/${OPENQA_GROUP_ID:-1}/build_results limit_builds=1 only_tagged=1
-          | jq -r '[ .build_results[] | select(.tag.description=="published") | .build ][]'
+          job_groups/${OPENQA_GROUP_ID:-1}/build_results only_tagged=1
+          | jq -r '[ .build_results[] | select(.tag.description=="published") | .build ][0]'
           ) >> "$GITHUB_OUTPUT"
       - name: Link to test result overview page
         run: >-