tox-uv is not needed to run tests in our environment.

--- pipdeptree-2.25.0/tox.toml.orig
+++ pipdeptree-2.25.0/tox.toml
@@ -1,4 +1,4 @@
-requires = [ "tox>=4.2", "tox-uv>=1.11.3" ]
+requires = [ "tox>=4.2" ]
 env_list = [
   "fix",
   "3.13",