fix thresholds

Author: TrevorBergeron

bigframes/functions/_function_client.py

@@ -742,9 +742,13 @@ def get_remote_function_specs(self, remote_function_name):
 
 def _infer_milli_cpus_from_memory(memory_mib: int) -> int:
     # observed values, not formally documented by cloud run functions
-    if memory_mib < 512:
-        raise ValueError("Cloud run supports at minimum 512MiB per instance")
-    elif memory_mib == 512:
+    if memory_mib < 128:
+        raise ValueError("Cloud run supports at minimum 128MiB per instance")
+    elif memory_mib == 128:
+        return 83
+    elif memory_mib <= 256:
+        return 167
+    elif memory_mib <= 512:
         return 333
     elif memory_mib <= 1024:
         return 583