ci(py-deps): Bump pytket from 2.14.0 to 2.15.0 (#304)

Bumps [pytket](https://github.com/quantinuum/tket) from 2.14.0 to 2.15.0.
- [Release notes](https://github.com/quantinuum/tket/releases)
- [Commits](Quantinuum/tket@v2.14.0...v2.15.0)

---
updated-dependencies:
- dependency-name: pytket
  dependency-version: 2.15.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

poetry.lock

@@ -21,7 +21,7 @@ docstr-coverage = ">=2.3,<2.4"
 sphinx = ">=8.2,<9.1"
 sphinx-autodoc-typehints = ">=3.2,<3.7"
 nbmake = ">=1.5,<1.6"
-pytket = ">=2.9,<2.15"
+pytket = ">=2.9,<2.16"
 matplotlib = "^3.10.8"
 
 [build-system]