[Backport 8.x] Update dependency chai to v5 (#2457)

Co-authored-by: elastic-renovate-prod[bot] <174716857+elastic-renovate-prod[bot]@users.noreply.github.com>

Author: github-actions[bot]

package.json

@@ -62,7 +62,7 @@
     "@types/split2": "4.2.3",
     "@types/stoppable": "1.1.3",
     "@types/tap": "15.0.12",
-    "chai": "4.5.0",
+    "chai": "5.1.2",
     "cross-zip": "4.0.1",
     "desm": "1.3.1",
     "into-stream": "7.0.0",