fix(gh actions): use GITHUB_SHA instead of HEAD

Author: tzhelyazkova

scripts/publish.sh

@@ -18,7 +18,7 @@ cp -R out/ "$PUBLISH_DIR/draft"
 echo "Current head: $(git rev-parse HEAD)"
 echo "Current dir: $(pwd)"
 
-CURRENT_VERSION=$(git tag --points-at HEAD | grep 'GROQ-\d.*')
+CURRENT_VERSION=$(git tag --points-at $GITHUB_SHA | grep 'GROQ-\d.*')
 
 # If this is a tagged commit, publish to a permalink and index.
 if [ -n "$CURRENT_VERSION" ]; then