gifn-apply: tox.ini: only one Ruff environment, pinned version

Drop the "relaxed" Ruff environment, only use the pedantic one with
a pinned Ruff version so we have some control over the Ruff diagnostics.
The Ruff development is still somewhat in flux, even with Ruff 0.1.x's
preview mode.

Change-Id: Id4f00c7898abb4a58d88b2cd8a384c78ee82a5ec
2 files changed
tree: 54c895670732446ad8f1945b0a73bc42a4c970cb
  1. .gitreview
  2. patches/
  3. tools/