fix version updating CI job

.github/workflows/versions.yaml

@@ -3,8 +3,9 @@ name: Sync component versions
 on:
   schedule:
     - cron: '18 8 * * *'
+
 jobs:
-  labeler:
+  versions:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v2
@@ -12,5 +13,5 @@ jobs:
     - uses: romoh/dependencies-autoupdate@v1.1
       with:
         token: ${{ secrets.GITHUB_TOKEN }}
-        update-command: './scripts/generate-versions.sh > jsonnet/kube-prometheus/versions.json'
-        on-changes-command: 'make --always-make generate'
+        update-command: "'scripts/generate-versions.sh $token > jsonnet/kube-prometheus/versions.json'"
+        on-changes-command: "'make --always-make generate'"

scripts/generate-versions.sh

 #!/bin/bash
 
+set -euo pipefail
+
 get_latest_version() {
-  curl --retry 5 --silent -H "Authorization: token $token" "https://api.github.com/repos/${1}/releases/latest" | jq '.tag_name' | tr -d '"v'
+  echo >&2 "Checking release version for ${1}"
+  curl --retry 5 --silent --fail -H "Authorization: token $GITHUB_TOKEN" "https://api.github.com/repos/${1}/releases/latest" | jq '.tag_name' | tr -d '"v'
 }
 
-# token can be passed as `GITHUB_TOKEN` or `token` variable
-token=${token:-${GITHUB_TOKEN}}
+# token can be passed as `GITHUB_TOKEN` variable or passed as first argument
+GITHUB_TOKEN=${GITHUB_TOKEN:-${1}}
 
-if [ -z "$token" ]; then
-	echo "GITHUB_TOKEN not set. Exiting"
+if [ -z "$GITHUB_TOKEN" ]; then
+	echo >&2 "GITHUB_TOKEN not set. Exiting"
 	exit 1
 fi
 
 cat <<-EOF
 {
-  "alertmanager": "$(get_latest_version "prometheus/alertmanager")"
+  "alertmanager": "$(get_latest_version "prometheus/alertmanager")",
   "blackboxExporter": "$(get_latest_version "prometheus/blackbox_exporter")",
   "grafana": "$(get_latest_version "grafana/grafana")",
   "nodeExporter": "$(get_latest_version "prometheus/node_exporter")",