ci(dnf-check-versions): fix failure condition

Author: thomasleplus

.github/workflows/dnf-check-versions.yml

@@ -17,4 +17,4 @@ jobs:
         run: |
           set -euo pipefail
           IFS=$'\n\t'
-          docker run --pull always -t --user root --entrypoint /bin/sh "leplusorg/${GITHUB_REPOSITORY#*/docker-}:main" -c 'if dnf upgrade -y | tee -a /dev/stderr | grep -q -v -e "^Nothing to do."; then exit 1; fi'
+          docker run --pull always -t --user root --entrypoint /bin/sh "leplusorg/${GITHUB_REPOSITORY#*/docker-}:main" -c 'if ! dnf upgrade -y | tee -a /dev/stderr | grep -q -e "^Nothing to do."; then exit 1; fi'