Flip conditional

diff returns 0 if no difference which is what we want.

.github/workflows/ci-openapi.yml

@@ -176,7 +176,7 @@ jobs:
           script: |
             TGT_DIR="/srv/repository/main/openapi"
             LAST_SPEC="$( ls -lt ${TGT_DIR}/unstable/ | grep 'jellyfin-openapi' | head -1 | awk '{ print $NF }' )"
-            if ! diff /srv/incoming/openapi/unstable/jellyfin-openapi-${{ env.JELLYFIN_VERSION }}.json ${TGT_DIR}/unstable/${LAST_SPEC} &>/dev/null; then
+            if diff /srv/incoming/openapi/unstable/jellyfin-openapi-${{ env.JELLYFIN_VERSION }}.json ${TGT_DIR}/unstable/${LAST_SPEC} &>/dev/null; then
                 rm /srv/incoming/openapi/unstable/jellyfin-openapi-${{ env.JELLYFIN_VERSION }}.json
                 exit 0
             fi