prod: increase frac_update_pr_json from 0.1 to 0.25

Author: beckermr

conda_forge_tick/settings.py

@@ -87,7 +87,7 @@ def graph_github_backend_raw_base_url(self) -> str:
     In tests or when debugging, you probably need to set this to 1.0 to update all feedstocks.
     """
 
-    frac_update_pr_json: Fraction = 0.1
+    frac_update_pr_json: Fraction = 0.25
     """
     The fraction of feedstocks (randomly selected) to update in the prs job.
     In tests or when debugging, you probably need to set this to 1.0 to update all feedstocks.