flow: update rules

Signed-off-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

Author: github-actions[bot]

flow/designs/nangate45/bp_multi_top/rules-base.json

@@ -92,7 +92,7 @@
         "compare": ">="
     },
     "finish__timing__hold__tns": {
-        "value": -0.96,
+        "value": -2.35,
         "compare": ">="
     },
     "finish__design__instance__area": {