ci: Isolate uv cache per tox env

[sl0thentr0py]

No description provided.

[github-actions]

Codecov Results 📊

✅ 88426 passed | ⏭️ 6022 skipped | Total: 94448 | Pass Rate: 93.62% | Execution Time: 298m 27s

📊 Comparison with Base Branch

Metric	Change
Total Tests	—
Passed Tests	—
Failed Tests	—
Skipped Tests	—

✨ No test changes detected

All tests are passing successfully.

✅ Patch coverage is 100.00%. Project has 2474 uncovered lines.
✅ Project coverage is 89.38%. Comparing base (base) to head (head).

Coverage diff

@@            Coverage Diff             @@
##          main       #PR       +/-##
==========================================
+ Coverage    89.35%    89.38%    +0.03%
==========================================
  Files          192       192         —
  Lines        23285     23285         —
  Branches      8002      8002         —
==========================================
+ Hits         20804     20811        +7
- Misses        2481      2474        -7
- Partials      1309      1309         —

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