Update gittools/actions action to v3.1.6 (#1478)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/close-milestone.yml

@@ -76,7 +76,7 @@ jobs:
           default-label: ':sparkles: mysterious'
           github-token: '${{ secrets.GITHUB_TOKEN }}'
       - name: 📲 Install GitReleaseManager
-        uses: gittools/actions/gitreleasemanager/[email protected].2
+        uses: gittools/actions/gitreleasemanager/[email protected].6
         with:
           versionSpec: '0.18.0'
       - name: Get Repo and Owner