fix(publish): version exists variable wasn't available

Author: naftis

.github/workflows/npm-publish.yml

@@ -33,9 +33,11 @@ jobs:
           PACKAGE_VERSION=$(node -p "require('./package.json').version")
           if npm view @opencrvs/mosip@$PACKAGE_VERSION > /dev/null 2>&1; then
             echo "Version $PACKAGE_VERSION already exists on npm."
+            echo "version-exists=true" >> $GITHUB_OUTPUT
             exit 0
           else
             echo "Version $PACKAGE_VERSION does not exist on npm."
+            echo "version-exists=false" >> $GITHUB_OUTPUT
           fi
         working-directory: packages/country-config