Fix empty-wal test regex for cross-platform ls -l output

The regex pattern for matching `ls -l` output needed to use \s+ instead
of single spaces to handle different whitespace in date formatting
across platforms (e.g., "Feb  2" vs "Feb 12").

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: Varun Deep Saini

acceptance/bundle/deploy/wal/empty-wal/test.toml

@@ -9,5 +9,5 @@ Pattern = "GET /api/2.2/jobs/get"
 Response.Body = '{"job_id": 1001, "settings": {"name": "test-job"}}'
 
 [[Repls]]
-Old = '-rw[^ ]+ \d+ [^ ]+ [^ ]+ \d+ [A-Z][a-z]+ \d+ \d+:\d+'
+Old = '-rw[^\s]+\s+\d+\s+[^\s]+\s+[^\s]+\s+\d+\s+[A-Z][a-z]+\s+\d+\s+\d+:\d+'
 New = '[FILE_INFO]'