Update tabpfn requirement from <7,>=6.0.5 to >=6.0.5,<8 (#259)

Updates the requirements on [tabpfn](https://github.com/priorlabs/tabpfn) to permit the latest version.
- [Release notes](https://github.com/priorlabs/tabpfn/releases)
- [Changelog](https://github.com/PriorLabs/TabPFN/blob/main/CHANGELOG.md)
- [Commits](PriorLabs/TabPFN@v6.0.6...v7.0.1)

---
updated-dependencies:
- dependency-name: tabpfn
  dependency-version: 7.0.1
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Phil <phil@priorlabs.ai>

Author: dependabot[bot]

pyproject.toml

@@ -10,7 +10,7 @@ dependencies = [
     "pandas>=1.4.0,<3",
     "scikit-learn>=1.6.0,<1.7",
     "scipy>=1.11.1,<2",
-    "tabpfn>=6.0.5,<7",
+    "tabpfn>=6.0.5,<8",
     "tabpfn-common-utils[telemetry-interactive]>=0.2.0",
 ]