fix(scripts): exit when change log file is empty

.gitea/scripts/add-annotations.sh

@@ -97,7 +97,11 @@ while IFS= read -r line; do
   fi
 done <<< "${COMMIT_TITLES}"
 
-yq --no-colors --inplace ".annotations.\"artifacthub.io/changes\" |= loadstr(\"${YAML_FILE}\") | sort_keys(.)" "${CHART_FILE}"
-yq --no-colors --inplace ".version = \"${NEW_TAG}\"" "${CHART_FILE}"
+if [ -s "${YAML_FILE}" ]; then
+  yq --no-colors --inplace ".annotations.\"artifacthub.io/changes\" |= loadstr(\"${YAML_FILE}\") | sort_keys(.)" "${CHART_FILE}"
+else
+  echo "ERROR: Changelog file is empty: ${YAML_FILE}" 1>&2
+  exit 1
+fi
 
 rm "${YAML_FILE}"

Chart.yaml

@@ -4,21 +4,6 @@ annotations:
       url: https://git.cryptic.systems/volker.raschek/prometheus-fail2ban-exporter
     - name: support
       url: https://git.cryptic.systems/volker.raschek/prometheus-fail2ban-exporter-charts/issues
-  artifacthub.io/changes: |
-    - kind: changed
-      description: use short flags of cut
-    - kind: added
-      description: support Artifacthub annotations
-    - kind: changed
-      description: update volkerraschek/helm docker tag to v3.18.2
-    - kind: changed
-      description: update docker.io/volkerraschek/helm docker tag to v3.18.2
-    - kind: changed
-      description: update dependency volker.raschek/prometheus-fail2ban-exporter-charts to v0.4.0
-    - kind: changed
-      description: update volkerraschek/helm docker tag to v3.18.1
-    - kind: changed
-      description: update docker.io/volkerraschek/helm docker tag to v3.18.1
 apiVersion: v2
 appVersion: "0.1.1"
 description: Prometheus metric exporter for Fail2Ban