Refactor update job to streamline release body construction and improve readability

.gitea/workflows/update.yaml

@@ -19,7 +19,6 @@ jobs:
     steps:
       - name: Get latest Homebrewery release via GitHub API
         run: |
-          # 1) API-Call
           resp=$(curl -sSf \
             -H "Accept: application/vnd.github.v3+json" \
             -H "Authorization: token ${{ secrets.GH_TOKEN }}" \
@@ -40,19 +39,17 @@ jobs:
           echo "DRAFT=$draft"           >>"$GITHUB_ENV"
           echo "PRERELEASE=$prerelease" >>"$GITHUB_ENV"
 
-          read -r -d '' RELEASE_BODY <<EOF
+          {
-          # Homebrewery $name Image
+            echo "RELEASE_BODY<<EOF"
-
+            printf '%s\n' "# Homebrewery $name Image"
-          > _This is an automated Docker Image update. Nothing other than the Homebrewery version changed._
+            printf '\n'
-
+            printf '%s\n' "> _This is an automated Docker Image update. Nothing other than the Homebrewery version changed._"
-          $body_text
+            printf '\n'
-
+            printf '%s\n' "$body_text"
-          See original Changelog from [$name]($url)
+            printf '\n'
-          EOF
+            printf '%s\n' "See original Changelog from [$name]($html_url)"
-          
+            echo "EOF"
-          echo "RELEASE_BODY<<EOF"      >>"$GITHUB_ENV"
+          } >>"$GITHUB_ENV"
-          printf '%s\n' "$RELEASE_BODY" >>"$GITHUB_ENV"
-          echo "EOF"                    >>"$GITHUB_ENV"
 
       - name: Debug step
         run: |