fix(github-actions): do not nest deploy directory in final tmp dir

The github action creates a temporary directory for adding the
metadata files. Right now the cp logic is incorrect and nestes the
base folder inside it. We can ensure the deploy folder becomes
the tmp dir 1:1 by not creating it before copying.

Author: devversion

github-actions/deploy-previews/pack-and-upload-artifact/action.yml

@@ -39,8 +39,7 @@ runs:
       id: copy
       shell: bash
       run: |
-        dir="$RUNNER_TEMP/pack-and-upload-tmp-dir"
-        mkdir -p $dir
+        dir="$RUNNER_TEMP/pack-and-upload-tmp-dir/"
         cp -R "${{inputs.deploy-directory}}" "$dir"
         chmod -R u+w "$dir"
         echo "deploy-dir=$dir" >> $GITHUB_OUTPUT