CI: fixed the heredoc parsing issues when single quotes are present in the notes by using a local function in shell script

.github/workflows/sidestore-deploy.yml

@@ -198,18 +198,6 @@ jobs:
 
       - name: Set Release Info variables
         run: |
-          # Format localized description
-          LOCALIZED_DESCRIPTION=$(cat <<EOF
-          This is release for:
-            - version: "${{ inputs.version }}"
-            - revision: "${{ inputs.short_commit }}"
-            - timestamp: "${{ steps.date.outputs.date }}"
-          
-          Release Notes:
-          ${{ steps.release_notes.outputs.content }}
-          EOF
-          )
-
           echo "IS_BETA=${{ inputs.is_beta }}" >> $GITHUB_ENV
           echo "BUNDLE_IDENTIFIER=${{ inputs.bundle_id }}" >> $GITHUB_ENV
           echo "VERSION_IPA=${{ inputs.marketing_version }}" >> $GITHUB_ENV
@@ -219,6 +207,22 @@ jobs:
           echo "SHA256=$SHA256_HASH" >> $GITHUB_ENV
           echo "DOWNLOAD_URL=https://github.com/SideStore/SideStore/releases/download/${{ inputs.release_tag }}/SideStore.ipa" >> $GITHUB_ENV
 
+          # Format localized description
+          get_description() {
+            cat <<EOF
+          This is release for:
+            - version: "${{ inputs.version }}"
+            - revision: "${{ inputs.short_commit }}"
+            - timestamp: "${{ steps.date.outputs.date }}"
+
+          Release Notes:
+          ${{ steps.release_notes.outputs.content }}
+          EOF
+          }
+
+          LOCALIZED_DESCRIPTION=$(get_description)
+          echo "$LOCALIZED_DESCRIPTION"
+
           # multiline strings
           echo "LOCALIZED_DESCRIPTION<<EOF" >> $GITHUB_ENV
           echo "$LOCALIZED_DESCRIPTION" >> $GITHUB_ENV