ci: install gomplate

Author: axelrindle

.github/workflows/update-tags.yml

@@ -28,6 +28,11 @@ jobs:
           sudo apt-get update
           sudo apt-get install -y skopeo
 
+      - name: Install gomplate
+        run: |
+          sudo curl -o /usr/local/bin/gomplate -sSL \
+            https://github.com/hairyhenderson/gomplate/releases/latest/download/gomplate_linux-amd64
+
       - name: Login to ${{ env.REGISTRY }}
         run: |
           skopeo login -u ${{ github.actor }} -p ${{ github.token }} ghcr.io