Update build workflow to trigger on release events and adjust update job to include token

.gitea/workflows/update.yaml

@@ -0,0 +1,71 @@
+name: Updating to latest Homebrewery Release
+
+on:
+  schedule:
+    - cron: '0 9,17 * * *'
+
+  workflow_dispatch:
+
+concurrency:
+  group: "update-homebrewery"
+  cancel-in-progress: true
+
+permissions:
+  contents: write
+
+jobs:
+  update:
+    runs-on: ubuntu-24.04
+    steps:
+      - name: Get latest Homebrewery release via GitHub API
+        run: |
+          resp=$(curl -sSf \
+            -H "Accept: application/vnd.github.v3+json" \
+            -H "Authorization: token ${{ secrets.GH_TOKEN }}" \
+            https://api.github.com/repos/naturalcrit/homebrewery/releases/latest)
+
+          id=$(         echo "$resp" | jq -r .id)
+          tag_name=$(   echo "$resp" | jq -r .tag_name)
+          name=$(       echo "$resp" | jq -r .name)
+          url=$(        echo "$resp" | jq -r .url)
+          draft=$(      echo "$resp" | jq -r .draft)
+          prerelease=$( echo "$resp" | jq -r .prerelease)
+          body_text=$(  echo "$resp" | jq -r .body)
+
+          echo "ID=$id"                 >>"$GITHUB_ENV"
+          echo "TAG_NAME=$tag_name"     >>"$GITHUB_ENV"
+          echo "NAME=$name"             >>"$GITHUB_ENV"
+          echo "URL=$url"               >>"$GITHUB_ENV"
+          echo "DRAFT=$draft"           >>"$GITHUB_ENV"
+          echo "PRERELEASE=$prerelease" >>"$GITHUB_ENV"
+
+          {
+            echo "RELEASE_BODY<<EOF"
+            printf '%s\n' "# Homebrewery $name Image"
+            printf '\n'
+            printf '%s\n' "> _This is an automated Docker Image update. Nothing other than the Homebrewery version changed._"
+            printf '\n'
+            printf '%s\n' "$body_text"
+            printf '\n'
+            printf '%s\n' "See original Changelog from [$name]($html_url)"
+            echo "EOF"
+          } >>"$GITHUB_ENV"
+
+      - name: Debug step
+        run: |
+          echo "id: $ID"
+          echo "draft: $DRAFT"
+          echo "tag_name: $TAG_NAME"
+          echo "name: $NAME"
+          echo "url: $URL"
+          echo "prerelease: $PRERELEASE"
+
+      - name: Create Docker Release
+        uses: softprops/action-gh-release@v2
+        if: ${{ env.ID > 0 && env.DRAFT != 'true' }}
+        with:
+          token: ${{ secrets.GT_UPDATE_TOKEN }}
+          prerelease: ${{ env.PRERELEASE }}
+          name: ${{ env.NAME }}
+          tag_name: ${{ env.TAG_NAME }}
+          body: ${{ env.RELEASE_BODY }}