point setup.cfg at tahoe-lafs master revision, too

setup.cfg

@@ -41,11 +41,11 @@ install_requires =
     # have been observed to cause problems).
     Twisted[tls,conch]>=18.4.0
 
-    # Lease renewal changes aren't available from a release of Tahoe yet, or
-    # even the main branch...  Note "Public index servers SHOULD NOT allow the
-    # use of direct references in uploaded distributions."
+    # Lease renewal changes aren't available from a release of Tahoe yet.
+    # Note "Public index servers SHOULD NOT allow the use of direct references
+    # in uploaded distributions."
     # https://www.python.org/dev/peps/pep-0440/#direct-references
-    tahoe-lafs @ https://github.com/tahoe-lafs/tahoe-lafs/archive/refs/heads/3842.allocate_buckets-without-lease-renewal.zip
+    tahoe-lafs @ https://github.com/tahoe-lafs/tahoe-lafs/archive/d3c6f58a8ded7db3324ef97c47f5c1921c3d58b7.zip
     treq
     pyutil