Update GHPages.yml

Author: ma91n

.github/workflows/GHPages.yml

@@ -16,6 +16,7 @@ jobs:
             sh -c "
               apk update \
               && apk add --no-cache nodejs npm \
+              && npm update -g npm \
               && npm -v \
               && npm config set puppeteer_skip_chromium_download true -g \
               && npm install -g mermaid-filter \