Automatically close milestones (#318)

Author: lucacome

Diff for: .github/workflows/ci.yml

@@ -32,7 +32,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        go-version: [stable]
+        go-version: ["1.21", stable]
     steps:
       - name: Checkout Repository
         uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
@@ -99,6 +99,7 @@ jobs:
         uses: actions/setup-go@cdcb36043654635271a94b9a6d1392de5bb323a7 # v5.0.1
         with:
           go-version: stable
+        if: ${{ github.ref_type == 'tag' }}
 
       - name: Run GoReleaser
         uses: goreleaser/goreleaser-action@286f3b13b1b49da4ac219696163fb8c1c93e1200 # v6.0.0

Diff for: .goreleaser.yaml

@@ -10,3 +10,6 @@ announce:
     enabled: true
     channel: "#announcements"
     message_template: "NGINX Plus Go Client {{ .Tag }} is out! Check it out: {{ .ReleaseURL }}"
+
+milestones:
+  - close: true