Update build.yml

Co-authored-by: Joe Wicentowski <[email protected]>

.github/workflows/build.yml

@@ -33,8 +33,7 @@ jobs:
       # TODO(DP) Validate ?
       - name: Ensure all XML files are well-formed
         run: |
-          xmllint --noout \
-            $(find . -type f -name '*.xml')
+          find . -type f -name '*.xml' -print0 | xargs -0 xmllint -noout
 
       # Build
       - name: Setup Node.js