fix: improve Homebrew token check using step output instead of env check

Author: ruphy

.github/workflows/release.yml

@@ -121,15 +121,21 @@ jobs:
             | sort -z \
             | xargs -0 sha256sum > checksums.txt
 
+      - name: Check if Homebrew token is set
+        id: check_token
+        run: |
+          if [ -n "${{ secrets.HOMEBREW_TAP_TOKEN }}" ]; then
+            echo "token_set=true" >> $GITHUB_OUTPUT
+          else
+            echo "token_set=false" >> $GITHUB_OUTPUT
+          fi
+
       - name: Generate Homebrew formula and push tap
+        if: steps.check_token.outputs.token_set == 'true'
         env:
           VERSION: ${{ steps.tag.outputs.VERSION }}
           HOMEBREW_TAP_TOKEN: ${{ secrets.HOMEBREW_TAP_TOKEN }}
         run: |
-          if [ -z "${HOMEBREW_TAP_TOKEN:-}" ]; then
-            echo "HOMEBREW_TAP_TOKEN is not set, skipping Homebrew tap update"
-            exit 0
-          fi
           set -euo pipefail
           TAR_URL="https://github.com/ruphy/sshdb/archive/refs/tags/v${VERSION}.tar.gz"
           SHA256=$(curl -L "$TAR_URL" | shasum -a 256 | awk '{print $1}')