chore: simplify output format in detect-changes script and update condition in CD workflow

Author: Almaju

.github/scripts/detect-changes.sh

@@ -30,8 +30,8 @@ done
 echo "Found changed crates: ${changed_crates[*]}"
 
 if [ ${#changed_crates[@]} -eq 0 ]; then
-  echo "matrix={\"component\":[]}" >> "$GITHUB_OUTPUT"
+  echo "matrix=[]" >> "$GITHUB_OUTPUT"
 else
   json_array=$(printf '"%s",' "${changed_crates[@]}" | sed 's/,$//')
-  echo "matrix={\"component\":[$json_array]}" >> "$GITHUB_OUTPUT"
+  echo "matrix=[$json_array]" >> "$GITHUB_OUTPUT"
 fi 

.github/workflows/cd.yml

@@ -29,7 +29,7 @@ jobs:
 
   publish:
     needs: detect-changes
-    if: ${{ fromJson(needs.detect-changes.outputs.matrix).component != '[]' }}
+    if: ${{ needs.detect-changes.outputs.matrix != '[]' }}
     runs-on: ubuntu-latest
     env:
       GH_TOKEN: ${{ github.token }}